Related to the execution interest rate and repayment method, calculated based on the current general annual interest rate of 5.88 for a period of more than five years and equal repayment of principal and interest (the same monthly repayment amount), the monthly interest rate is 5.88/12. 900,000, 20 years (240 months):

Monthly repayment=900000*5.88/12* (1 5.88/12)^240/((1 5.88/12)^240-1)= 6385.73

Total interest = 6385.73*240-900000=632575.20

Explanation: ^240 is the 240th power