Consider a three$-$step manufacturing process. Each step employs a single worker who is not cross$-$trained for any other step. The setup represents the amount of time the worker spends setting up the machine for each order. No units can be processed on a machine while it is being set up$.$ The run time represents the amount of time it takes the worker to process a single unit. When a worker completes an order, he or she hands it off to the next stage.

a$.$If only $10-$unit orders are produced, what is the average capacity of the process per $8-$hour day? Assume each customer order has a $10$ units requirement.