:41.2-9.5*1.8/0.45

问题描述:

:41.2-9.5*1.8/0.45
41.2-9.5*1.8/0.45 333*333+999*889

原式=41.2-9.5*0.9*2*2/0.9
=41.2-9.5*4
=41.2-38
=3.2
原式=999*111+999*889
=999*(111+889)
=999*1000
=999000