Barry and Mary have accumulated over $$4\mathrm{.}8$ million during their $50$ years of marriage. They have two children and six grandchildren.

What is the total amount removed from Barry and Mary's estate in $2020$ if they gift the maximum allowable amount to their children

and grandchildren without incurring any gift taxes? $($Enter your answer in dollars not in millions of dollars.$)$

Total amount of estate removed