Campo Systems reported the following financial data (in millions) in its annual report: for 2015 income 8,052 net sales 52,250 net assets 56,734 for 2016 net income 7,250 net sales 36,117 net assets 68,128 if the companys total assets are $55,676 in 2014, calculate the companys (a) return on assets and asset turnover for 2015 and 2016.