Please let me, a professional, do the math for you. The interest rate of 50% per day is 50 cents for 1,000, 1.85 cents for 3,700, 55.5 yuan per month, and 666 yuan for twelve months a year. This is the interest on your overdue 3700 for one year. Next, calculate the late payment fee for one day based on 5% of the minimum repayment. Ten percent of the minimum repayment of your 3700 is 370. Then the late payment fee should be 370*0.05 equal to 18.5. This is your late payment fee. You now need to repay the principal of 3700, the interest of 666, and the late payment fee of 18.5, which is 4384.5. This is what you need to repay for my ICBC credit card. I don’t know how to ask