Question: using the value of the undivided interest held by investors and retained by upri at december 31 , 2009 as a proxy for ar balance , what was the average receivable turnover in 2009?\\n\\n[14] : at december 31 , 2009 and 2008 , the value of the interest retained by upri was $ 417 million and $ 431 million , respectively .
Answer: 11.2