40.25-((37.75+12又1/4)*1/5-15)-4

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40.25-((37.75+12又1/4)*1/5-15)-440.25-((37.75+12又1/4)*1/5-15)-440.25-((37.75+12又1/4)*1/5-15)-441.25

40.25-((37.75+12又1/4)*1/5-15)-4
40.25-((37.75+12又1/4)*1/5-15)-4

40.25-((37.75+12又1/4)*1/5-15)-4
41.25