Answer:
1320
Explanation:
You need to list the multiples of 120 and 132:
120: 120, 240, 360, 480, 600, 720, 840, 960, 1080, 1200, 1320...
132: 132, 264, 396, 528, 660, 792, 924, 1056, 1188, 1320...
Until the numbers are the same. The first number that is the same in the list is the Lowest Common Factor (LCM).