U.S. Airfilter has hired you as a supply chain consultant. The company makes air filters for residential heating and air-conditioning systems. These filters are made in a single plant located in Louisville, Kentucky, in the United States. They are distributed to retailers through wholesale centers in 100 locations in the United States, Canada, and Europe. You have collected the following data relating to the value of inventory in the U.S. Airfilter supply chain: QUARTER 1 (JANUARY THROUGH MARCH) QUARTER 4 QUARTER 2 (APRIL THROUGH JUNE) QUARTER 3 (JULY THROUGH SEPTEMBER) (OCTOBER THROUGH DECEMBER) All amounts in millions of U.S. dollars Sales (total quarter): United states Canada Europe 434 430 574 534 124 134 77 103 63 37 42 22 Cost of goods sold (total quarter) 385 374 435 416 Raw materials at the Louisville plant (end-of- es quarter) 98 55 66 87 Work in process and finished goods at the Louisville plant (end-of quarter) Distribution center inventory (end-of-quarter): 138 106 145 280 United states Canada 42 31 30 57 12 17 16 7 5 6 Europe a. What is the average inventory turnover for the firm? (Round your answer to 3 decimal places.) Average inventory turnover