(70+20)*3 = 90*30 = 2700
7*(60+30) = 7*90 = 630
(50+20)*9 = 70*9 = 630
4*(40+50) = 4*90 = 360
(20+70)*6 = 90*6 = 540
9*(10+70) = 9*80 = 720
(70+20)*3 = 90*30 = 2700
7*(60+30) = 7*90 = 630
(50+20)*9 = 70*9 = 630
4*(40+50) = 4*90 = 360
(20+70)*6 = 90*6 = 540
9*(10+70) = 9*80 = 720