LCM( 1008, 2000 ) = 126000
The formula for finding LCM is
$$ \text{LCM} (a, b) = \frac{ a \cdot b }{ \text{GCD}(a,b)} $$In this example we have: a = 1008, b = 2000 and GCD(1008, 2000) = 16.
$$ \text{LCM} (1008, 2000) = \frac{ 1008 \cdot 2000 }{ \text{GCD}(1008,2000)} = \frac{ 2016000 }{ 16 } = 126000 $$