Calculate the LCM and HCF of the following pairs of integers and Check that LCM \(\times\)  HCF \(=\) product of the two numbers.

\(LCM\) of \(28\) and \(84=\)
 
\(HCF\) of \(28\) and \(84=\)
 
Product of \(28\) and \(84=\)
 
\(LCM \times HCF\) \(=\)
 
From (1) and (2) LCM \(\times\) HCF product of the two numbers.