Required: $1.$ Suppose Harbour uses a traditional costing system with machine hours as the cost driver. Determine the amount of overhead assigned to each product line. $2.$ Calculate the production cost per unit for each of Harbour's products under a traditional costing system. $3.$ Calculate Harbour's gross margin per unit for each product under the traditional costing system. $4.$ Select the appropriate cost driver for each activity pool and calculate the activity rates if Harbour wanted to implement an ABC system. $5.$ Assuming an ABC system, assign overhead costs to each product based on activity demands Calculate the production cost per unit for each of Harbour's products in an ABC system. $7.$ Calculate Harbour's gross margin per unit for each product under an ABC system. Compare the gross margin of each product under the traditional system and ABC.