Handy Home sells windows $(60\%$ of sales$)$ and doors $(40\%$ of sales$).$ The selling price of each window is $$280$ and of each door is $$660.$ The variable cost of each window is $$165$ and of each door is $$430.$ Fixed costs are $$861,350.$

$(1)$ Compute the weighted$-$average contribution margin.

$\backslash$table$[[,,$Sales mix,,Contribution margin,Total per unit$],[$Windows$,60\%,,,,],[$Doors$,40\%,,,,],[,,$Weighted$-$average contribution margin,,,$]]$

$(2)$ Compute the break$-$even point in units using the weighted$-$average contribution margin.

$\backslash$table$[[$Numerator:$,\text{'},$Denominator:,Break Even Units,$],[,1,,=,$Break Even Units$]]$

$(3)$ Compute the number of units of each product that will be sold at the break$-$even point.

$\backslash$table$[[,$Sales mix,Number of units to break even,$\backslash$table$[[$Unit sales at$],[$break$-$even point$]],],[$Windows$,,,,],[$Doors$,,,,],[$Total$,,,,]]$