Corporation has received a request for a special order of $8,900$ units of product K$19$ for $$45\mathrm{.}80$ each. The normal selli roduct is $$50\mathrm{.}90$ each, but the units would need to be modified slightly for the customer. The normal unit product coe K$19$ is computed as follows:

$\backslash$table$[[$materials$,$$$16\mathrm{.}60$