LCM( 180, 204 ) = 3060
The formula for finding LCM is
$$ \text{LCM} (a, b) = \frac{ a \cdot b }{ \text{GCD}(a,b)} $$In this example we have: a = 180, b = 204 and GCD(180, 204) = 12.
$$ \text{LCM} (180, 204) = \frac{ 180 \cdot 204 }{ \text{GCD}(180,204)} = \frac{ 36720 }{ 12 } = 3060 $$