10+20=
30
5-3=
2
8*3=
24
8/2=
4
1.1+2.01=
3.11
5.01-1.1=
3.91
1.1*3=
3.3
8.1:9=
0.9
-9+4=
-5
-9-5=
-14
-3*2=
-6
42/0.06=
700