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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. $($Refer to Exhibit $25-1$ and Exhibit $25-2)$

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

b$.$ This year Casey made a taxable gift of $$17\mathrm{.}2$ million to Stephanie. Casey is not married, and the $2010$ gift was the only other taxable gift he has ever made.

$\backslash$table$[[$Grtt tax due,$],[$Unused applicable credit,$