Rome Corporation is a supplier of ball bearings. Because of the specialized manufacturing process employed, considerable work-in-process and raw material inventories are created. The current inventory levels are $1,700,000 and $2,500,000, respectively. In addition, finished goods inventory is $3,500,000, and sales (at cost) for the current year are expected to be about $28 million. Assume they operate 50 weeks per year. What is their inventory turnover?

(Please show the work in the formula....not excel sheet)