196-3X(89-45)=
196-3X44=
196-132=64
36X2X(12+47)=
36X2X59=4248
15+60:(39-29)=
15+60:10=
15+6=21
1000-(35+60X2)+40=
1000-(35+120)+40=
1000-155+40=
845+40=885
999+(10:2X4)-501=
999+(5X4)-501=
999+20-501=
999-481=518
50+(40+80X100)-50=
50+(40+8000)-50=
50+8040-50=
50+7990=8040