25*125*32=25*4*8*125=100*1000+100000
3.8-3.8*(3.8-3.8)=3.8-0=3.8
(5/8-1/4)*(8/9除4/3)=3/8*36/27=1/2
831*36又4/5 +63.2*831=831*184/5+63.2*831=831*(36.8+63.2)=83100
25*125*32=25*4*8*125=100*1000+100000
3.8-3.8*(3.8-3.8)=3.8-0=3.8
(5/8-1/4)*(8/9除4/3)=3/8*36/27=1/2
831*36又4/5 +63.2*831=831*184/5+63.2*831=831*(36.8+63.2)=83100