The loan lasts for 20 years, the annual benchmark interest rate is 6.55%, and the monthly repayment is 74.85 * 62 = 4,640.7 yuan/month, calculated according to the benchmark interest rate; If it is 15% discount, the annual interest rate is 5.57%, and the monthly repayment is 69.17 * 62 = 4,288.54 yuan/month; The above is a commercial loan, and if there is a provident fund, it will be lower than this.