The loan interest of 320,000 yuan is 6.6%, and the annual interest is 21120,000 yuan. The loan interest rate of 320 thousand is 6.6%. To calculate the interest value to be paid, the loan amount needs to be multiplied by the interest rate and then multiplied by 0.066, which is equal to 2 1 120000 yuan, and the interest of 2 1 120000 yuan needs to be paid every year. Interest is the use fee of money in a certain period of time, including deposit interest and loan interest.