What is the LCM of 8, 11, 36, 80?

8 = 2^3

11 = 11
36 = 2^2 * 3^2
80 = 2^4 * 5

LCM is the product of all the highest powers of the primes listed.

It is thus 2^4 * 3^2 * 5 * 11 = 7920