(0,5:1,25+7/5:1.4/7-3/11)*3
-------------------------------------- =32
(1,5+1/4):18.1/3
----------------------------------------------------------
1)0,5:1,25=0,4
2)7/5:1.4/7=7/5:11/7=7*7/5*11=49/55
3)0,4+49/55=(220+490)/550=710/550=71/55
4)71/55-3/11=(71-15)/55=56/55
5)56/55*3=168/55
6)1,5+1/4=1,5+0,25=1,75
7)1,75:18.1/3=175/100:55/3=(175*3)/100*55=525/5500=105/1100=21/220
8)168/55:21/220=(168*220)/(55*21)=32