1270*3.8+127*51+1.27*1400+730*9.6+0.73*700

问题描述:

1270*3.8+127*51+1.27*1400+730*9.6+0.73*700

1270*3.8+127*51+1.27*1400+730*9.6+0.73*700
=127*38+127*51+127*14+73*96+73*7
=127*(38+51+14)+73*(96+7)
=127*103+73*103
=(127+73)*103
=200*103
=20600