It doesn't have one
Since 815 is a multiple of 5, it is automatically the LCM.
LCM(815, 35) = 5705.
For 815, 32 the LCM is: 26,080
The LCM is 25.
50 * * * * * No. It is 25.
The LCM is: 200
The LCM is 250.
The LCM is 150.
The LCM is 175.
The LCM is 900.
The LCM is 525.
The LCM is 600.