Find the greatest number that will divide $445, 572$, and $699$, leaving remainders $4,5,6$ respectively.

Find the LCM of $12, 18, 20$.

Find the LCM of $36, 40, 126$.

Find the LCM of $16, 28, 40, 77$.

Find the LCM of $144, 180, 384$.

Find the LCM of $84, 90,120$.

Find the LCM of $28, 36, 45, 60$.

For the given pair of numbers, verify that their product $=\mathrm{HCF}\times \mathrm{LCM}$.

$87,145$