Financial report context:
visa inc . notes to consolidated financial statements 2014 ( continued ) september 30 , 2008 ( in millions , except as noted ) the following table sets forth the use of net proceeds of $ 19.1 billion received in connection with the company 2019s ipo in march 2008: .

Financial table:
( in billions ): net ipo proceeds; column_2: $ 19.1
( in billions ): march 2008 redemptions of class b and class c ( series i ) common stock; column_2: -13.4 ( 13.4 )
( in billions ): funding of escrow account; column_2: -3.0 ( 3.0 )
( in billions ): balance at september 30 2008; column_2: 2.7
( in billions ): october 2008 redemptions of class c ( series ii ) and class c ( series iii ) common stock; column_2: -2.7 ( 2.7 )
( in billions ): balance of proceeds following october redemptions; column_2: $ 2014

Additional report context:
redemptions class b common stock and class c common stock other than class c ( series ii ) common stock 2014march 2008 in march 2008 , the company completed the required redemption of a portion of the class b common stock and class c ( series i ) common stock . the company used $ 13.4 billion of net proceeds from the ipo to redeem 154738487 shares of class b common stock and 159657751 shares of class c ( series i ) common stock at a redemption price of $ 42.77 per share . after the redemptions and subject to the restrictions set forth in the company 2019s amended and restated certificate of incorporation ( the 201ccharter 201d ) and the conversion and transfer restrictions below , all outstanding shares of class b common stock are convertible into 175367482 shares of class a common stock and 152009651 shares of class c ( series i , iii and iv ) common stock are convertible into shares of class a common stock on a one-to-one basis . as a result of the initial funding of the litigation escrow account , the conversion rate applicable to class b common stock was reduced to approximately 0.71 shares of class a common stock for each share of class b common stock , and the 245513385 shares of class b common stock were convertible into 175367482 shares of class a common stock . the number of shares of class c ( series i , iii and iv ) common stock convertible into shares of class a common stock excludes those class c ( series iii ) common shares that were redeemed in october 2008 , as further described below . class c ( series iii ) common stock and class c ( series ii ) common stock 2014october 2008 as anticipated , in october 2008 , the company used $ 1.508 billion of net proceeds from the ipo for the required redemption of 35263585 shares of class c ( series iii ) common stock at a redemption price of $ 42.77 per share as required by the charter . following the october 2008 redemption , the remaining 27499203 shares of class c ( series iii ) and class c ( series iv ) common stock outstanding automatically converted into shares of class c ( series i ) common stock on a one-to-one basis . the company also used $ 1.146 billion of the net proceeds from the ipo to fund the redemption of all class c ( series ii ) common stock in october 2008 . the redemption price of $ 1.146 billion was adjusted for dividends paid and related interest , par value of related shares redeemed , and the return to visa europe of the class c ( series ii ) common stock subscription receivable outstanding , resulting in a cash payment of $ 1.136 billion . as a result of the execution of the ipo , visa europe had the option to .

Question: what portion of the ipo net proceeds was used for funding the of escrow account?
Answer: 15.7%