1. The interest of 4 cents per cent is 0.48 cents, which is 0.0048 yuan, that is, the monthly interest per yuan is 0.0048 yuan, so the monthly interest on 110,000 yuan is 528 yuan.
2. If 110,000 yuan is repaid in equal installments of principal and interest over three years, the annual interest rate is 5.76 (0.48*12=5.76). It is very convenient to use the loan calculator.