75x42.7+57.3-0.573x25)/3x7972=?

问题描述：

75x42.7+57.3-0.573x25)/3x7972=?

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最佳答案：

(0.75×42.7+57.3-57.3×100×0.25)÷3×7972
=0.75*(42.7+57.3)÷3×4×1993
=25×4×1993
=199300