Johnson Plastics makes and sells, among many other things, specialty plastic display cases for retail stores. Johnson$$s expected demand for the display cases is $2,600$ units, and average daily demand is $6$ units. The production process is most efficient when $13$ units per day are produced at a cost of $$125$ per unit. Setup cost is $$14.$ Inventory carrying cost at Johnson is determined to be $10$ percent annually.

What is the best production order quantity?

How many days is a required production run?