1, first calculate the total amount of fixed assets loans and the total amount of excess investment principal replacement.

2. Calculate the loan interest rate of fixed assets and the interest rate for replacing the excess investment principal.

3. Calculate the repayment period of fixed asset loans and replacement of excess investment principal, and the principal and interest to be repaid in each period.

4. Calculate the repayment amount of each installment according to the principal and interest payable for each installment.

5. Add up the repayment amount of each period to get the total repayment amount.