题目内容

某市为合理用电,鼓励各用户安装“峰谷”电表。该市原电价为每度O.53元,改装新电表后,每天晚上10点至次日早上8点为“低谷”,每度收取0.28元,其余时间为“高峰”,每度收取0.56元。为改装新电表每个用户须收取100元改装费。假定某用户每月用200度电。两个不同时段的耗电量各为100度。那么改装电表12个月后,该用户可节约______。

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