You need at least two numbers to find an LCM.
The Least Common Multiple of 125 and 15 is 3,000.
The LCM is 15.
The least common multiple of the numbers 612 and 15 is 3,060.
The Least Common Multiple of 9 and 15 is 45.
5
3
15
120
90
60
The LCM is 60.
That would be 15