When an enterprise lends money to a bank, it shall calculate the interest according to the commercial loan interest rate and loan term of the lending bank. The calculation formula is: interest = principal × interest rate × taking China Bank as an example:

1. Short-term loan: within one year (inclusive), with annual interest rate of 4.35%. Borrow 30,000 yuan, with annual interest of 65,438 yuan+0,305.

2. Medium and long-term loans: the annual interest rate is 4-5 years (inclusive). The annual interest rate is 75% for more than 5 years. 9%. The three-year loan interest is 4,275 yuan; The six-year loan interest is 8820 yuan.