bjr

27 x 24

27 = 3 x 9 = 3 x 3 x 3

24 = 3 x 8 = 3 x 2 x 2 x 2

27 x 24 = 3³ x 3 x 2² = 2³ x 3⁴

26 x 38

26 = 2 x 13

38 = 2 x 19

26 x 38 = 2 x 13 x 2 x 19 = 2² x 13 x 19

63 x 23

63 = 3 x 21 = 3 x 3 x 7

23 - ras

63 x 23 = 3² x 7 x 23