要计算抵押贷款的偿还金额，利率、本金和付款额应分别选用哪种类型？解释你选择的理由。
To calculate a mortgage payment, what types would you use for the rate, principal, and payment? Explain why you selected each type.
获胜者们将在接下来的三年内分别获得100000，200000和300000英镑的奖金，这些奖金将以等额分期付款的形式发放。
Winners will be selected for awards of $100, 000, $200, 000, and $300, 000 which will be paid in equal installments over three years.
请问在付款服务机构每天截数时间之前或后付款，会有何分别?。
Does it make any difference whether I pay before or after the daily cut-off time of thee-payment service?
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