2, interest, the daily interest rate is five ten thousandths, and the monthly interest is compounded (you owe 50 days, it must be more than a month, so you have to compound interest for 20 days, knowing that your billing date is more accurate)

The interest for the first 30 days (the first billing month) is 1500*0.05%*30=22.5.

The interest after 20 days (the second billing month) is (1500+15+22.5) * 0.05% * 20 =15.375.

3. The bill repayment date of bank bills should have passed 50 days. Although the withdrawal does not enjoy the interest-free repayment period, it is subject to the interest-free repayment period, so you have to pay a certain late fee, 1500*5%=75.

4, so if you want to return it, you must pay at least1500+15+22.5+15.375+75 =1627.875.