Given that HCF (306, 657) = 9, find LCM (306, 657).

Since product of two numbers is equal to the product of HCF and LCM,

\(LCM × HCF = 306 × 657\)
\(LCM = {{306 × 657} \over HCF} = {{306 × 657} \over 9}\)
LCM = 22338