[問題] 數位生活卡的四捨五入方式
每次收到帳單自己都會計算一下次期回饋金,
以往我都是將數位消費*2%加上一般消費*0.7%,
總額的小數點後再四捨五入,前幾期算下來都符合。
但這次在算九月份的帳單時卻發現回饋金少1元,
試將計算方式改成"數位通路*2%後四捨五入 + 一般消費*0.7%後四捨五入"
就符合系統計算的金額
是我之前的計算方式錯誤還是系統出錯?
還是回饋金的算法改了?
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09/19 21:58, , 1F
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