John Fare purchased $18,000 worth of equipment by making a $3000 down payment and promising to pay the remainder of the cost in semiannual payments over the next 5 years. The interest rate on the debt is 12%, compounded semiannually. Find the following. (Round your answers to the nearest cent.)

(a) the size of each payment $ (b) the total amount paid over the life of the loan $ (c) the total interest paid over the life of the loan $