求翻译：4. 按月等额本息还款法，甲方按照本合同第37条约定的还款公式所确定的金额，每月以相等的金额偿还借款本息；是什么意思？

4 equal monthly installments of principal and interest repayment method, the amount determined by the Party in accordance with the the repayment formula agreed in the contract 37 monthly equal amount to repay the loan principal and interest;

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4. Waits for the volume principal and interest also funds law, the party of the first part to decide the amount monthly according to this contract 37th treaty which also the funds formula determined, each month by equal amount repayment load principal and interest;

4. equal installments on a monthly principal and interest payment method, the customer shall, in accordance with this contract the 37th set repayment amount determined by the formula, in equal monthly amounts of debt principal and interest;

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