(600+300):3=300
(600+300):9=100
(50+6):8=7
(500+20):5=104
(200+120):4=80
(400+80):8=60
(600+300)/3 = 300
(600+300)/9 = 100
(50+6)/8 = 7
(500+20)/5 = 104
(200+120)/4 = 80
(400+80)/8 = 60
(600+300):3=300
(600+300):9=100
(50+6):8=7
(500+20):5=104
(200+120):4=80
(400+80):8=60
(600+300)/3 = 300
(600+300)/9 = 100
(50+6)/8 = 7
(500+20)/5 = 104
(200+120)/4 = 80
(400+80)/8 = 60