脱式计算 (3.7-45.5)/(6.3/4.2)

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脱式计算 (3.7-45.5)/(6.3/4.2)
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脱式计算 (3.7-45.5)/(6.3/4.2)
脱式计算 (3.7-45.5)/(6.3/4.2)

脱式计算 (3.7-45.5)/(6.3/4.2)
(3.7-45.5)/(6.3/4.2)
=-41.8/(3/2)
=-418/10*2/3
=-418/15