The annual interest rate reaches 36.54% million yuan, and the total interest after three years of loan is 4380 yuan. The calculation method is 40000×3.65% = 1460 yuan, 1460 yuan× 3 = 4380 yuan.
Annual interest rate refers to the one-year deposit interest rate, which refers to the ratio of interest amount to deposit principal or loan principal within a certain period, and is usually divided into annual interest rate, monthly interest rate and daily interest rate.