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$[$The following information applies to the queslions displayed below$]$

In $2010$ Casey made a taxable gift of $$7\mathrm{.}2$ million to both Stephanie and Linda $($a total of $$14\mathrm{.}4$ million in taxable gifts$).$

Calculate the amount of gift tax due this year and Casey's unused applicable credit under the following alternatives, Pefter to Exhinit $25-1$ and Exhibit $25-2.)$

Note: Enter your answers in dollars, not millions of dollars. Leave no answer blank. Enter zero if applicable,

a$.$ This year Casey made a taxable gift of $$1$ million to Stephanie. Casey is not married, and the $2010$ gift was the only other taxable gift he has ever made.