The interest of 2.4 here refers to the annual interest rate of 2.4%, and the interest is equal to the loan amount multiplied by the interest rate, that is, 6,543,800 yuan, multiplied by 2.4% = 100000× 0.024 = 2,400, that is, the loan is100000, and the interest to be repaid is 2,400 yuan, so it needs to be divided.