Gildan Activewear Inc. reported the following selected financial information (all in U.S. $ millions): sales of $2,909 in 2018, $2,751 in 2017, and $2,585 in 2016. The company also reported net income of $351 in 2018, $362 in 2017, and $347 in 2016. Assets at the end of 2018 were $3,005; at the end of 2017, $2,981; and at the end of 2016, $2,990. Calculate Gildans (1) asset turnover, (2) profit margin, and (3) return on assets for 2018 and 2017.