Equal principal and interest method: Loan principal: 15,000 Assumed annual interest rate: 4.750 Loan period: 3 years: The monthly monthly payment of principal and interest is: 447.88 yuan, the total repayment amount is: 16123.68 yuan,* **Interest payable: 1123.68 yuan. The interest repayment in the first month is: 59.38; the principal repayment in the first month is: 388.5; thereafter, the interest repayment amount decreases and the principal repayment increases each month. (Interim interest rate adjustments are not taken into account)