3.12÷0.12+12.08
=312÷12+12.08
=312÷3÷4+12.08
=104÷4+12.08
=26+12.08
=38.08能不能再简单点怎么再简单？步骤省略一丢丢3.12÷0.12+12.08
=26+12.08
=38.08那40×1.28×40怎么简算=4*128*4
=512*4
=2048