多少除以多少等于0.812312312312312 - 知识问答

多少除以多少等于0.8123123123123123无限循环

1个回答

0.8123123.
= 0.8 + 0.0123123.
= 8/10 + 1/10 × 123/999
= 8/10 + 1/10 × 41/111
= 8/10 + 41/1110
= (888+41)/1110
= 929/1110

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