3.75÷【0.2×(0.74-0.24)】=3.75÷(0.2×0.5)=3.75÷0.1=(3.75×10)÷(0.1×10)=37.5÷1=37.5
原式=3.75÷(0.2×0.5)=3.75÷0.1=3.75×10=37.5
3.75÷【0.2×(0.74-0.24)】=3.75÷(0.2×0.5)=3.75÷0.1=37.5