0.0018个0025×0.0018个0016等于

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0.0018个0025×0.0018个0016等于0.0018个0025×0.0018个0016等于0.0018个0025×0.0018个0016等于0.0018个0025×0.0018个0016=0

0.0018个0025×0.0018个0016等于
0.0018个0025×0.0018个0016等于

0.0018个0025×0.0018个0016等于
0.0018个0025×0.0018个0016
=0.00(18个0)25×[0.00(18个0)4×0.4]
=[0.00(18个0)25×0.00(18个0)4]×0.4
=0.00(36个0)1×0.4
=0.00(37个0)4