请腊液采轮友物纳告蚂
1.25/2.5*3.4=1.7
1.25×3.4÷2.5=1.25÷2.5×3.4=0.5×3.4=1.7
1.25*3.4/2.5=1.25/2.5*3.4=0.5*3.4=1.7
