0.36-20%=0.16
4/3+12/1=6/5
50%+5/2=3
5/3×6/5=2
12÷9/8=13.5
1÷1%=100
0.75×9/8=3/2
3-3÷7=3/2
﹙3/1-4/1﹚×12=1