24=2×2×2×3

28=2×2×7

32=2×2×2×2×2

Least common multiple = 2×2×2×3×7 = 672

Short division:

4|24 28 32

___________

2| 6 7 8

——————

= 3 7 4

Least common multiple =4×2×3×7×4=672