Find the time needed to pay off a loan

The payment necessary to amortize a 6.2% loan of $87,000 compounded annually, with 10 annual payments is $11,932.77. The total of the payments is $119,327.70 with a total interest payment of $32,327.70. The borrower made larger payments of $12,000.00. Calculate (a) the time needed to pay off the loan, (b) the total amount of the payments, and (c) the amount of interest saved. a. The time needed to pay off the loan with payments of $12,000.00 is years. (Round up to the nearest year.)