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When buying and selling second-hand houses, the bank mortgage has not been repaid. After the transfer and sale, how to calculate the bank repayment, the interest and the balance of the loan?

Monthly repayment amount = principal*monthly interest rate*[(1+monthly interest rate)^n/[(1+monthly interest rate)^n-1]

where n in the formula Indicates the number of months of the loan, ^n represents the nth power, such as ^240, which represents the 240th power (loan for 20 years, 240 months) Monthly interest rate = annual interest rate / 12

Total interest = monthly repayment amount *Loan number of months-principal