0:00:00.000,0:00:00.490
我们需要将1.03075 除成0.25

0:00:00.490,0:00:07.760
要是除数是小数，第一件事是把除数

0:00:07.760,0:00:11.260
那个你要除的号码

0:00:11.260,0:00:13.690
乘以十

0:00:13.690,0:00:17.850
让它成为整数

0:00:17.850,0:00:19.990
那你就能把小数点向右边移。

0:00:19.990,0:00:21.220


0:00:21.220,0:00:23.620
你每将一个号码乘以十

0:00:23.620,0:00:26.170
等于你把小数点向右边移一次。

0:00:26.170,0:00:27.620
根据这个例子，我们要把小数点

0:00:27.620,0:00:29.310
向右边移一次，两次。

0:00:29.310,0:00:34.690
所以0.25乘10两次就等于0.25乘一百，

0:00:34.690,0:00:38.190
我们就把0.25变成25.

0:00:38.190,0:00:41.250
如果你对除数这么做，那你也需要

0:00:41.250,0:00:42.860
对

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