highlight the answer please

You have an outstanding student loan with requred payrnents of $500 per month for the next four years. The inierest rale on the loan is 9% APR (compounded monthly). Now that you realize your best investment is to prepay your student foan, you decide to prepay as much as you can each month. Looking at your budget, you can aflord to pay an extra $250 a month in adeition to your reqiared monthly payments of $500, or $750 in total each month. How long wil it take you to pay off the loan? (Note: Be careful not to round any intemediate steps loss than six decimal places:) "The number of months to pay ofl the ban is (Round to two decimal places.)