Culver Service has over $200$ auto$-$maintenance service outlets nationwide. It provides primarily two lines of service: oil changes and brake repair. Oil change$-$related services represent $75\%$ of its sales and provide a contribution margin ratio of $20\%.$ Brake repair represents $25\%$ of its sales and provides a $60\%$ contribution margin ratio. The company's fixed costs are $$12,540,000($or $$62,700$ per service outlet$).$

$($a$)$

Calculate the dollar amount of each type of service that the company must provide in order to break even.

Oil changes

$

Brake repair

$

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