My credit card is overdrawn by 6 points, and the interest on the 12 installments is 8%. How much is the total * * *?
loan principal: 6, yuan, assuming annual interest rate: 8.%, loan life: 12 months; monthly repayment amount by matching principal and interest method: 521.93 yuan, total repayment amount: 6,263.16 yuan, and * * * interest payable: 263.16 yuan.