The annual interest rate is 65,438+08.36%, the monthly interest rate is 65,438+08.36%/65,438+02,80003 years (36 months), and the principal and interest are equal (the monthly repayment amount is the same):

Monthly repayment amount = 8000018.36%/12 (118.36%/12) 36/((118.

Total interest =2906.6636-80000=24639.76

Description: 36 is the 36th power.

Second, how to calculate the interest of Ping An Bank loan of 300,000 yuan?

Here is the formula for calculating interest by banks: interest = principal x term x interest rate.

Interest is often calculated by cumulative method: interest = principal x days x annual interest rate /360 (principal x days is called cumulative).

For example, a loan of 70,000 yuan was made on February 3, with a term of 3 months (due on May 3); The loan is 60,000 yuan with a term of 5 months (the maturity date is July 3), and the interest rates of both loans are 5.22% (the benchmark interest rate stipulated by the People's Bank of China is 5.22% within 6 months (inclusive)), so the interest rates of the two loans are: I1= 70,000x89 (days) x 5.22%/362% respectively.

Three. Ping An Bank borrowed 80,000 yuan, with an annual interest rate of 18.36%. The loan will be repaid in equal monthly installments within 3 years. ...

Matching repayment method of principal and interest = 12 10.028 yuan = monthly interest rate of total loan (annual interest rate divided by 12)[ monthly interest rate of loan principal divided by (1 interest rate) total repayment months-1] average repayment method of principal = 2/kloc-