Task: Table-QA (source dataset: FinQA)

Task: 
You are given a table containing structured data and a natural language question referring to the table. Your goal is to analyze the table and provide an accurate and concise answer based on the given data.

Instructions:
1. Understand the Table: Examine the structure, headers, and data in the table. Identify relevant columns and rows related to the question.
2. Interpret the Question: Determine whether the question requires direct retrieval, aggregation, comparison, sorting, filtering, or inference.
3. Extract the Answer: Use logical reasoning and numerical operations (if necessary) to derive the correct response from the table.
4. Format the Answer: No explanation, return the answer in a structured JSON format: {"answer": <answer>}. If the question cannot be answered due to missing or ambiguous data, return a JSON response with {"answer": null}.

Table:
| Unnamed: 0       | aggregate cost   | fair value   | level 2   | level 3   |
|:-----------------|:-----------------|:-------------|:----------|:----------|
| december 31 2009 | $ 2.5            | $ 1.6        | $ 0.3     | $ 1.3     |
| december 31 2008 | 3.1              | 2.1          | 0.8       | 1.3       |

Question:
at december 31 2009 what was the ratio of the aggregate cost to the fair value of the loans held-for-sale that are carried at locom


pre_text: the decrease in mortgage servicing rights of $ 2.7 billion was primarily 2022 attributed to mark-to-market losses recognized in the portfolio due to decreases in the mortgage interest rates and increases in refinancing .
the increase in securities sold under agreements to repurchase of $ 5 2022 billion is driven by a $ 6.2 billion increase from net transfers in as the continued credit crisis impacted the availability of observable inputs for the underlying securities related to this liability .
this was offset by a reduction from net settlements of $ 1.4 billion .
the decrease in short-term borrowings of $ 3.7 billion is due to net transfers 2022 out of $ 1.8 billion as valuation methodology inputs considered to be unobservable were determined not to be significant to the overall valuation .
in addition , net payments of $ 1.8 billion were made during the year .
the increase in 2022 long-term debt of $ 2.2 billion is driven by : the net transfers in of $ 38.8 billion , substantially all of which related 2013 to the transfer of consolidated siv debt in the first quarter of 2008 , as the availability of observable inputs continued to decline due to the current crisis ; offset by $ 2.2 billion in gains recognized as credit spreads widened during the 2013 year ; and $ 34.3 billion decrease from net settlements/payments .
included in 2013 these settlements were $ 21 billion of payments made on maturing siv debt and the replacement of $ 17 billion of non-recourse , consolidated siv debt classified as level 3 with citigroup debt classified as level 2 .
this replacement occurred in connection with the purchase of the siv assets by the company in november 2008 .
items measured at fair value on a nonrecurring basis certain assets and liabilities are measured at fair value on a nonrecurring basis and therefore are not included in the tables above .
these include assets measured at cost that have been written down to fair value during the periods as a result of an impairment .
in addition , these assets include loans held-for-sale that are measured at locom that were recognized at fair value below cost at the end of the period .
the fair value of loans measured on a locom basis is determined where possible using quoted secondary-market prices .
such loans are generally classified as level 2 of the fair-value hierarchy given the level of activity in the market and the frequency of available quotes .
if no such quoted price exists , the fair value of a loan is determined using quoted prices for a similar asset or assets , adjusted for the specific attributes of that loan .
the following table presents all loans held-for-sale that are carried at locom as of december 31 , 2009 and 2008 ( in billions ) : aggregate cost fair value level 2 level 3 .
post_text: .
label: 1.5625
qa: answer: 1.56
explanation: the aggregate cost of the loans held-for-sale that are carried at locom is $ 1.56 for each $ 1 at to the fair value
ann_table_rows: 1
steps: op: divide2-1
arg1: 2.5
arg2: 1.6
res: 1.56
program: divide(2.5, 1.6)
gold_inds: table_1: the december 31 2009 of aggregate cost is $ 2.5 ; the december 31 2009 of fair value is $ 1.6 ; the december 31 2009 of level 2 is $ 0.3 ; the december 31 2009 of level 3 is $ 1.3 ;
exe_ans: 1.5625
tfidftopn: text_14: the following table presents all loans held-for-sale that are carried at locom as of december 31 , 2009 and 2008 ( in billions ) : aggregate cost fair value level 2 level 3 .
text_10: in addition , these assets include loans held-for-sale that are measured at locom that were recognized at fair value below cost at the end of the period .
program_re: divide(2.5, 1.6)
model_input: text_14
the following table presents all loans held-for-sale that are carried at locom as of december 31 , 2009 and 2008 ( in billions ) : aggregate cost fair value level 2 level 3 .
table_1
the december 31 2009 of aggregate cost is $ 2.5 ; the december 31 2009 of fair value is $ 1.6 ; the december 31 2009 of level 2 is $ 0.3 ; the december 31 2009 of level 3 is $ 1.3 ;
table_2
the december 31 2008 of aggregate cost is 3.1 ; the december 31 2008 of fair value is 2.1 ; the december 31 2008 of level 2 is 0.8 ; the december 31 2008 of level 3 is 1.3 ;