Find the HCF and

306 = 2 × 3² × 17

657 = 3² × 73

HCF = 3² = 9

LCM = 2 × 3² × 17 × 73

= 22338

L.H.S. = LCM x HCF

= 22338 × 9 = 2010402

RHS = Product of two numbers

= 306 × 657

= 201042

⇒ LHS = RHS

Hence, verified