Determine the missing amounts.

$\backslash$table$[[,,\backslash$table$[[$Unit Selling$],[$Price$]],,,\backslash$table$[[$Unit Variable$],[$Costs$]],,,\backslash$table$[[$Unit Contribution$],[$Margin$]]],[1.,,$$$220,,,$$$176,,$$$,],[2.,,$$$560,,$$$,,($c$),,$$$252$