On December 31, 2020, Skysong Inc. rendered services to Beghun Corporation at an agreed price of $118,887, accepting $46,600 down and agreeing to accept the balance in four equal installments of $23,300 receivable each December 31. An assumed interest rate of 11% is imputed. (a1) Prepare an amortization schedule. Assume that the effective-interest method is used for amortization purposes. (Round answers to 0 decimal places, e.g. 5,275.)