The debt is amortized by equal payments made at the end of each payment interval. Compute (a) the size of the periodic payments; (b) the outstanding principal at the time indicated; (c) the interest paid by the payment following the time indicated for finding the outstanding principal; and (d) the principal repaid by the same payment as in part c. Debt Principal Interest Rate Payment Interval 3 months Conversion Period semi-annually Outstanding Principal After: 4th payment $18,000.00 12% Repayment Period 7 years (a) The size of the periodic payment is S HELED