巧算“12.34*56.78+876.6*5.678”

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巧算“12.34*56.78+876.6*5.678”巧算“12.34*56.78+876.6*5.678”巧算“12.34*56.78+876.6*5.678”12.34*56.78+876.6*5

巧算“12.34*56.78+876.6*5.678”
巧算“12.34*56.78+876.6*5.678”

巧算“12.34*56.78+876.6*5.678”
12.34*56.78+876.6*5.678
=5.678*(123.4+876.6)
=5.678*1000
=5678

12.34*56.78+876.6*5.678
=12.34*56.78+87.66*56.78
=(12.34+87.66)*56.78
=100*56.78
=5678