Determine the missing amounts.

$\backslash$table$[[,\backslash$table$[[$Unit Selling$],[$Price$]],,\backslash$table$[[$Unit Variable$],[$Costs$]],,\backslash$table$[[$Unit Contribution$],[$Margin$]],,\backslash$table$[[$Contributic$],[$Margin Rati$]]],[,$$$500,,$$$200,$$$,,($a$),],[,$$$250,$$$,,($c$),$$$65,,],[,,$$$,,($f$),$$$560,,]]$