0.25*37.5%+5/8*1/4
25%除以2/3+75%*3/2
1/4*(3/8+5/8)=1/4
(0.25+0.75)*3/2=3/2
1.0.25*(3/8)+5/8*0.25=.25(3/8+5/8)=0.25
2.0.25*3/2+0.75*3/2=(0.25+0.75)*3/2=1.5