2019 Net sales 1,600,000 Other Income 22,100 Total Revenues 1,622,100 cost and expenses Cost of sold 740,000 Research and development 90,000 General expenses 600,000 Interest 19,000 other 14,000 Total expenses 1,463,000 Earnings before income tax 159,100 income taxes 62,049 Earnings before no controlling interest 97,051 Operating income 170,000 Average common share issued 29,610 Average long-term debt 211,100 Average stockholders' equity(all common) 811,200 Average total assets 1,440,600 Average operating assets 1,390,200 Calculate Return on operating assets O 12.23% O 1.23% 2.23%