A company produces and sells three products.

Product $1$ Product $2$ Product $3$

Selling price per unit $$100$ $$200$ $$150$

Contribution Margin per Unit $$20$ $$80$ $$60$

Direct labor hours per unit $456$

The company has only $690$ direct labor hours per month and the monthly demand for each product is unlimited.

What is the maximum total monthly contribution margin that the company can earn?

$($Make sure to calculate the total contribution margin, not the per$-$unit amount.$)$