I don't know how to calculate these accounts receivable turnover ratios for these two. Could you please help me on these? Appreciate!

Comparing Two Companies in the Same Industry: Under Armour and Columbia Sportswear The following information is available from the financial statements included in Form 10-K for fiscal years 2014 and 2013 for Under Armour, Inc. and Columbia Sportswear Company (in thousands of dollars): Columbia Under Armour, Sportswear Inc. Company Net revenues (Net sales for Under Armour, Inc. & Columbia Sportswear) for the year ended December 31, 2014 $3,084,370 $2,100,590 Accounts receivable, net: December 31, 2014 279,835 344,390 December 31, 2013 209,952 306,878 Required: 1. Calculate the accounts receivable turnover ratios for both companies for the most recent year. Assume all sales are on credit. Round your answers to 2 decimal places. Under Armour times Columbia Sportswear times 2. Calculate the average length of time it takes each company to collect its accounts receivable. Use 360 days and round intermediate calculations to 2 decimal places and final answers to the nearest day. Under Armour days Columbia Sportswear days