27 x 35 = 35 x 27
(42 x 5) x 2 = 42 x (5 x 2)
27 x 3 x 5 = 27 x 15 x 1
47 x 3 + 29 x 3 = (47 +29) x 3
29 x 2 x 6 = 2 x (29 x 2)​