1500/(500-200*2)=1500/(500-400)=1500/100=151500*(500-200)/2=1500*300/2=450000/2=2250003546-283*4+819=3546-1132+819=2414+819=32331254+645/5-967=1254+129-967=1383-967=416
1500/(500-200*2)=1500/(500-400)=1500/100=15
1500*(500-200)/2=1500*300/2=450000/2=225000
3546-283*4+819=3546-1132+819=2414+819=3233
1254+645/5-967=1254+129-967=1383-967=416