2529 438+0 yuan. According to the calculation, the total credit card debt is 90,000, which will be repaid in three years (36 installments), with the interest rate of 0.75% for each installment, and 259.438+0 yuan will be repaid every month. Installment repayment means that there will be multiple repayments, and the repayment principal and interest will be allocated to each repayment.