The monthly payment formula of 1, m is m = p× [r/(1-(1+r) (-n))].
2. where r is the monthly interest rate (annual interest rate/12) and n is the total number of months (number of years × 12).
3. According to the subject conditions, P = 320,000, the annual interest rate is 4% (decimal 0.04), and the loan period is 20 years. Substitute into the formula to calculate.
4. The calculation result is: 1939.438+04 yuan.