Weller Industries has six divisions. Its Electrical Division $($which is operating at capacity$)$ produces a variety of electrical items, including an $x52$ electrical fitting that it sells to regular customers for $$8\mathrm{.}00$ each. The fitting has a variable manufacturing cost of $$4\mathrm{.}47.$

The company's Brake Division wants the Electrical Division to provide a large quantity of $x52$ fittings for $$6\mathrm{.}00$ each. The Brake Division, which is operating at $50\%$ of capacity, will put the fitting into a brake unit it produces and sells to an airplane manufacturer. The cost of the brake unit being built by the Brake Division follows:

$\backslash$table$[[$Purchased parts $($from outside vendors$),$$$22\mathrm{.}80$