Clay Harden borrowed $25,000 from a bank at an interest rate of 7% compounded monthly. The loan will be repaid in 48 equal monthly installments over four years. Immediately after his 20 th payment, Clay desires to pay the remainder of the loan in a single payment. Compute the total amount he must pay. The total amount Clay must pay immediately after his 20th payment will be $. (Round to the nearest dollar.)