A manufacturer has a production facility that requires 15,942 units of component JY21 per year. Following a long-term contract, the manufacturer purchases component JY21 from a supplier with a lead time of 15 days. The unit purchase cost is $34.6 per unit. The cost to place and process an order from the supplier is $139 per order. The unit inventory carrying cost per year is 10.2 percent of the unit purchase cost. The manufacturer operates 250 days a year. Assume EOQ model is appropriate. If the manufacturer uses a constant order quantity of 2,808 units per order, what is the number of orders per year? Use at least 4 decimal places