125*24 630/18 56*102

问题描述:

125*24 630/18 56*102

125*24
=125*8*3
=1000*3
=3000
630/18
=70*9/2*9
=70/2
=35
56*102
=56*(100+2)
=56*100+56*2
=5600+112
=5712