List all the common multiples of 6 and 9 that are smaller than 60. Give the answer(s) in ascending order. (Eg 1, 2, 3)
Multiples of 6: 6, 12, 18, 24, 30, 36, 42, 48, 54
Multiples of 9: 9, 18, 27, 36, 45, 54
Common multiples: 18, 36, 54
Answer(s): 18, 36, 54