The credit card installment fee of Postal Savings Bank needs to be calculated according to the formula "installment fee = installment total amount * installment fee rate". At present, the credit card installment fee rate of Postal Savings Bank is 0.6%. Assuming that the cardholder's installment amount is 65,438+00,000 yuan, divided into 65,438+02 installments, the handling fee for each installment should be 65,438+00,000 * 0.6% = 60 yuan, and the total handling fee payable is 65,438+02 * 60 = 720 yuan.