In the month of March, Blossom Salon services $620$ clients at an average price of $$120.$ During the month, fixed costs were $$18,564$ and variable costs were $65\%$ of sales.

$($a$)$

Determine the total contribution margin in dollars, the per unit contribution margin, and the contribution margin ratio.

Contribution margin in dollars $

Contribution margin per unit $

Contribution margin ratio $\%$