The demand per year (D) for product X is 7,000 units. The cost of placing an order (S) is $8. The cost per unit (C) of the item is $25.00. The holding cost (H) per unit per year is 6.40% of the cost of the item. Use the Economic Order Quantity (EOQ) model to determine:

- The optimal quantity to order

- The expected number of orders

- The optimal time between orders

- The total annual cost of maintaining that optimal quantity