3.9乘以0.309除以0.26怎么简算?
问题描述：
3.9乘以0.309除以0.26怎么简算?
答
3.9*.0309/.026=(1/100)*39*309/26=(1/100)*13*3*309/(13*2)=(1/100)*3*309/2
=(1/100)*927/2=(1/100)*463.5=4.635