The Mercedes Benz S580 sells for $139000. Mercedes Benz offers a 4-year lease at a rate of 3.1% (APR) with beginning of month payments, The buyout is equal to half the price of car. (The buyout is separate from (in addition to) the final monthly payment.) How much principal remains outstanding one year before the end of the loan term (just before the 37th monthly payment? (Ignore taxes.) Round your answer to the nearest dollar