[(5/8-0.625)*1000+3.6*25/9]/25/8简便计

问题描述:

[(5/8-0.625)*1000+3.6*25/9]/25/8简便计

=(0*1000+3.6*25/9)÷25/8
=3.6×25/9×8/25
=3.6×(25/9×8/25)
=3.6×8/9
=0.4×8
=3.2