check my work on these calculations please

Costing Report $\backslash$& Real World Application Case $2$ UPS

Part A: Activity Based Costing Calculation Report:

$1.$ Determine the product $($manufacturing$)$ cost per unit for each of the products using the volume$-$based method. Then, compute the gross margin per unit for uct to determine the most and least profitable product line.

$2.$ Determine the product $($manufacturing$)$ cost per unit for each of the products using the activity$-$based costing $($ABC$)$ method. Then, compute the gross margin per unit for each product to determine the most and least profitable product line.