The following table presents for each of the regulatory capital CDS transactions in the corporate loan portfolio, the gross transaction notional amount, net notional amount, attachment points, inception to date realized losses and percent non-investment grade:
## Table 0 ##
(a) Expressed as a percentage of gross transaction notional amount of the referenced obligations.
As a result of participation ratios and replenishment rights, the attachment point may not always be computed by dividing net notional amount by gross transaction notional amount.
(b) Represents realized losses incurred by the transaction (defaulted amounts less amounts recovered) from inception through December 31, 2010 expressed as a percentage of the initial gross transaction notional amount.
(c) Represents non-investment grade obligations in the underlying pools of corporate loans expressed as a percentage of gross transaction notional amount.
(d) Terminated effective March 15, 2011.
The following table presents, for each of the regulatory capital CDS transactions in the prime residential mortgage portfolio, the gross transaction notional amount, net notional amount, attachment points and inception to date realized losses:
## Table 1 ##
(a) Expressed as a percentage of gross transaction notional amount of the referenced obligations.
As a result of participation ratios and replenishment rights, the attachment point may not always be computed by dividing net notional amount by gross transaction notional amount.
(b) Represents realized losses incurred by the transaction (defaulted amounts less amounts recovered) from inception through December 31, 2010 expressed as a percentage of the initial gross transaction notional amount.
(c) Delinquency information is not provided to Capital Markets for the underlying pools of residential mortgages of this transaction.
However, information with respect to principal amount outstanding, defaults, recoveries, remaining term, property use, geography, interest rates, and ratings of the underlying junior tranches are provided to Capital Markets for such referenced pools.
American International Group, Inc. , and Subsidiaries NOTES TO CONSOLIDATED FINANCIAL STATEMENTS loss was recorded in Other realized capital gains (losses) in the Consolidated Statement of Income (Loss).
The fair values of AIG’s previously-held equity interest and the noncontrolling interest were based on Fuji’s publiclytraded share price on the Tokyo Stock Exchange as of the acquisition date.
An insignificant amount of acquisitionrelated costs, consisting primarily of legal and transaction fees, was recorded in Other expenses in the Consolidated Statement of Income (Loss).
In connection with the acquisition, AIG recognized a bargain purchase gain of $332 million, which was included in the Consolidated Statement of Income (Loss).
The bargain purchase gain was primarily attributable to the depressed market value of Fuji’s common stock, which AIG believes was the result of macro-economic, capital market and regulatory factors in Japan coupled with Fuji’s financial condition and results of operations.
AIG anticipates that the bargain purchase gain will not be subject to U. S.  or foreign income tax because the gain would only be recognized for tax purposes upon the sale of the Fuji shares.
Fuji’s financial information is reported on a one-quarter lag.
Because the acquisition occurred on March 31, 2010, revenue and earnings of Fuji for only the six months ended September 30, 2010 are included in the Consolidated Statement of Income (Loss) for the twelve months ended December 31, 2010.
The following unaudited summarized pro forma consolidated income statement information assumes that the acquisition of Fuji occurred as of January 1, 2009.
The pro forma amounts are for comparative purposes only and may not necessarily reflect the results of operations that would have resulted had the acquisition been completed at the beginning of the applicable period and may not be indicative of the results that will be attained in the future.
## Table 2 ##
6.
Fair Value Measurements Fair Value Measurements on a Recurring Basis AIG carries certain of its financial instruments at fair value.
AIG defines the fair value of a financial instrument as the amount that would be received from the sale of an asset or paid to transfer a liability in an orderly transaction between willing, able and knowledgeable market participants at the measurement date.
The degree of judgment used in measuring the fair value of financial instruments generally correlates with the level of observable valuation inputs.
AIG maximizes the use of observable inputs and minimizes the use of unobservable inputs when measuring fair value.
Financial instruments with quoted prices in active markets generally have more pricing observability and less judgment is used in measuring fair value.
Conversely, financial instruments for which no quoted prices are available have less observability and are measured at fair value using valuation models or other pricing techniques that require more judgment.
Pricing observability is affected by a number of factors, including the type of financial instrument, whether the financial instrument is new to the market and not yet established, the characteristics specific to the transaction, liquidity and general market conditions.
American International Group, Inc. , and Subsidiaries NOTES TO CONSOLIDATED FINANCIAL STATEMENTS Interest income and expense and dividend income on assets and liabilities elected under the fair value option are recognized and classified in the Consolidated Statement of Income (Loss) depending on the nature of the instrument and related market conventions.
For Direct Investment business-related activity, interest, dividend income and interest expense are included in Other income.
Otherwise, interest and dividend income are included in Net investment income in the Consolidated Statement of Income (Loss).
Gains and losses on AIG’s Maiden Lane Interests are recorded in Net investment income.
See Note 2(a) herein for additional information about AIG’s policies for recognition, measurement, and disclosure of interest and dividend income and interest expense.
During 2010, 2009 and 2008, AIG recognized losses of $467 million and $2 million and gains of $84 million, respectively, attributable to the observable effect of changes in credit spreads on AIG’s own liabilities for which the fair value option was elected.
AIG calculates the effect of these credit spread changes using discounted cash flow techniques that incorporate current market interest rates, AIG’s observable credit spreads on these liabilities and other factors that mitigate the risk of nonperformance such as cash collateral posted.
The following table presents the difference between fair values and the aggregate contractual principal amounts of mortgage and other loans receivable and long-term borrowings for which the fair value option was elected:
## Table 3 ##
At December 31, 2010 and 2009 there were no significant mortgage or other loans receivable for which the fair value option was elected that were 90 days or more past due and in non-accrual status.
Fair Value Information about Financial Instruments Not Measured at Fair Value Information regarding the estimation of fair value for financial instruments not carried at fair value (excluding insurance contracts and lease contracts) is discussed below: ?
Mortgage and other loans receivable: Fair values of loans on real estate and collateral loans were estimated for disclosure purposes using discounted cash flow calculations based upon discount rates that AIG believes market participants would use in determining the price that they would pay for such assets.
For certain loans, AIG’s current incremental lending rates for similar type loans is used as the discount rate, as it is believed that this rate approximates the rates that market participants would use.
The fair values of policy loans were not estimated as AIG believes it would have to expend excessive costs for the benefits derived.  ?
Finance receivables: Fair values of net finance receivables, less allowance for finance receivable losses, were estimated for disclosure purposes using projected cash flows, computed by category of finance receivable, discounted at the weighted average interest rates offered for similar finance receivables at the balance sheet date.
Cash flows were projected based on contractual payment terms adjusted for delinquencies and estimates of losses.
The fair value estimates do not reflect the underlying customer relationships or the related distribution systems.  ?
Cash, short-term investments, trade receivables, trade payables, securities purchased (sold) under agreements to resell (repurchase) and commercial paper and other short-term debt: The carrying values of these assets and liabilities approximate fair values because of the relatively short period of time between origination and expected realization.
REPUBLIC SERVICES, INC.  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued) credit exposure, we continually monitor the credit worthiness of the financial institutions where we have deposits.
Concentrations of credit risk with respect to trade accounts receivable are limited due to the wide variety of customers and markets in which we provide services, as well as the dispersion of our operations across many geographic areas.
We provide services to commercial, industrial, municipal and residential customers in the United States and Puerto Rico.
We perform ongoing credit evaluations of our customers, but generally do not require collateral to support customer receivables.
We establish an allowance for doubtful accounts based on various factors including the credit risk of specific customers, age of receivables outstanding, historical trends, economic conditions and other information.
Accounts Receivable, Net of Allowance for Doubtful Accounts Accounts receivable represent receivables from customers for collection, transfer, recycling, disposal and other services.
Our receivables are recorded when billed or when the related revenue is earned, if earlier, and represent claims against third parties that will be settled in cash.
The carrying value of our receivables, net of the allowance for doubtful accounts, represents their estimated net realizable value.
Provisions for doubtful accounts are evaluated on a monthly basis and are recorded based on our historical collection experience, the age of the receivables, specific customer information and economic conditions.
We also review outstanding balances on an account-specific basis.
In general, reserves are provided for accounts receivable in excess of 90 days outstanding.
Past due receivable balances are written-off when our collection efforts have been unsuccessful in collecting amounts due.
The following table reflects the activity in our allowance for doubtful accounts for the years ended December 31, 2013, 2012 and 2011:
## Table 4 ##
Restricted Cash and Marketable Securities As of December 31, 2013, we had $169.7 million of restricted cash and marketable securities.
We obtain funds through the issuance of tax-exempt bonds for the purpose of financing qualifying expenditures at our landfills, transfer stations, collection and recycling centers.
The funds are deposited directly into trust accounts by the bonding authorities at the time of issuance.
As the use of these funds is contractually restricted, and we do not have the ability to use these funds for general operating purposes, they are classified as restricted cash and marketable securities in our consolidated balance sheets.
In the normal course of business, we may be required to provide financial assurance to governmental agencies and a variety of other entities in connection with municipal residential collection contracts, closure or postclosure of landfills, environmental remediation, environmental permits, and business licenses and permits as a financial guarantee of our performance.
At several of our landfills, we satisfy financial assurance requirements by depositing cash into restricted trust funds or escrow accounts.
Property and Equipment We record property and equipment at cost.
Expenditures for major additions and improvements to facilities are capitalized, while maintenance and repairs are charged to expense as incurred.
When property is retired or

Tables referenced above, in order (Table 0 first):
<table><tr><td><i>(dollars in millions)</i>CDS</td><td>Gross TransactionNotional Amount atDecember 31,2010</td><td>Net NotionalAmount atDecember 31,2010</td><td>AttachmentPoint atInception<i><sup>(a)</sup></i></td><td>AttachmentPoint atDecember 31,2010<i><sup>(a)</sup></i></td><td>RealizedLossesthroughDecember 31,2010<i><sup>(b)</sup></i></td><td>PercentNon-investmentGrade atDecember 31,2010<i><sup>(c)</sup></i></td></tr><tr><td>1</td><td>$360</td><td>$264</td><td>10.03%</td><td>26.51%</td><td>0.52%</td><td>47.35%</td></tr><tr><td>2</td><td>1,287</td><td>1,051</td><td>10.00%</td><td>18.31%</td><td>0.20%</td><td>45.42%</td></tr><tr><td>3</td><td>2,965</td><td>2,453</td><td>13.26%</td><td>17.25%</td><td>0.00%</td><td>67.10%</td></tr><tr><td>4<i><sup>(d)</sup></i></td><td>703</td><td>383</td><td>14.00%</td><td>44.61%</td><td>0.16%</td><td>34.29%</td></tr><tr><td>5<i><sup>(d)</sup></i></td><td>569</td><td>259</td><td>14.00%</td><td>44.61%</td><td>0.16%</td><td>34.29%</td></tr><tr><td>6<i><sup>(d)</sup></i></td><td>1,300</td><td>783</td><td>14.00%</td><td>44.61%</td><td>0.16%</td><td>34.29%</td></tr><tr><td>Total</td><td>$7,184</td><td>$5,193</td><td></td><td></td><td></td><td></td></tr></table>
<table><tr><td><i>(dollars in millions)</i>CDS</td><td>Gross TransactionNotional Amount atDecember 31,2010</td><td>Net NotionalAmount atDecember 31,2010</td><td>AttachmentPoint atInception<i><sup>(a)</sup></i></td><td>AttachmentPoint atDecember 31,2010<i><sup>(a)</sup></i></td><td>RealizedLossesthroughDecember 31,2010<i><sup>(b)</sup></i></td></tr><tr><td>1</td><td>$387</td><td>$179</td><td>17.01%</td><td>52.35%</td><td>2.61%</td></tr><tr><td>2</td><td>234</td><td>97</td><td>18.48%</td><td>58.08%</td><td>2.15%</td></tr><tr><td>3</td><td>221</td><td>130</td><td>16.81%</td><td>40.99%</td><td>1.72%</td></tr><tr><td>4</td><td>269</td><td>184</td><td>13.19%</td><td>31.62%</td><td>0.50%</td></tr><tr><td>5<i><sup>(c)</sup></i></td><td>1,456</td><td>1,102</td><td>7.95%</td><td>24.13%</td><td>0.06%</td></tr><tr><td>6</td><td>9,048</td><td>8,250</td><td>7.50%</td><td>8.82%</td><td>0.08%</td></tr><tr><td>7</td><td>2,049</td><td>1,568</td><td>12.40%</td><td>23.48%</td><td>0.00%</td></tr><tr><td>8</td><td>18,143</td><td>16,080</td><td>9.20%</td><td>11.37%</td><td>0.12%</td></tr><tr><td>9</td><td>5,098</td><td>4,023</td><td>11.50%</td><td>21.08%</td><td>0.00%</td></tr><tr><td>Total</td><td>$36,905</td><td>$31,613</td><td></td><td></td><td></td></tr></table>
<table><tr><td> Years Ended December 31, <i>(in millions)</i> </td><td> 2010 </td><td>2009</td></tr><tr><td>Total revenues</td><td>$79,242</td><td>$77,828</td></tr><tr><td>Income (loss) from continuing operations</td><td>12,199</td><td>-13,859</td></tr><tr><td>Net income (loss)</td><td>10,135</td><td>-13,354</td></tr><tr><td>Net income (loss) attributable to AIG</td><td>7,828</td><td>-11,536</td></tr><tr><td>Net income (loss) attributable to AIG common shareholders</td><td>1,592</td><td>-12,831</td></tr><tr><td>Income (loss) per common share attributable to AIG:</td><td></td><td></td></tr><tr><td>Basic:</td><td></td><td></td></tr><tr><td>Income (loss) from continuing operations</td><td>14.81</td><td>-98.01</td></tr><tr><td>Diluted:</td><td></td><td></td></tr><tr><td>Income (loss) from continuing operations</td><td>14.81</td><td>-98.01</td></tr></table>
<table><tr><td> </td><td colspan="3">At December 31, 2010</td><td colspan="3">At December 31, 2009</td></tr><tr><td><i>(in millions)</i> </td><td>Fair Value </td><td>Outstanding Principal Amount </td><td>Difference</td><td>Fair Value </td><td>Outstanding Principal Amount </td><td>Difference</td></tr><tr><td> Assets:</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Mortgage and other loans receivable</td><td>$143</td><td>$203</td><td>$-60</td><td>$119</td><td>$253</td><td>$-134</td></tr><tr><td> Liabilities:</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Long-term debt</td><td>$10,778</td><td>$8,977</td><td>$1,801</td><td>$11,308</td><td>$10,111</td><td>$1,197</td></tr></table>
<table><tr><td></td><td>2013</td><td>2012</td><td>2011</td></tr><tr><td>Balance at beginning of year</td><td>$45.3</td><td>$48.1</td><td>$50.9</td></tr><tr><td>Additions charged to expense</td><td>16.1</td><td>29.7</td><td>21.0</td></tr><tr><td>Accounts written-off</td><td>-23.1</td><td>-32.5</td><td>-23.8</td></tr><tr><td>Balance at end of year</td><td>$38.3</td><td>$45.3</td><td>$48.1</td></tr></table>

Question: as of december 31 , 2013 what was the ratio of the restricted cash and marketable securities to the balance in the allowance for doubtful accounts
Answer: 4.43081
Reasoning program: divide(169.7,38.3)