515:5+203*4=103+812=915
1000-150*6=1000-900=100
230+960:6=230+160=390
(515:5)+(203*4)=915
1000-(150*6)=100
230+(960:6)=390
515:5+203*4=103+812=915
1000-150*6=1000-900=100
230+960:6=230+160=390
(515:5)+(203*4)=915
1000-(150*6)=100
230+(960:6)=390