How to i find/calculate Return on sales?

Income Statement All numbers in thousands Revenue 1/28/2017 Total Revenue 69,495,000 Cost of Revenue 48,872,000 Gross Profit 20,623,000 Operating Expenses Research Development Selling General and Administrative Non Recurring Others 13,356,000 2,298,000 Total Operating Expenses Operating Income or Loss 4,969,000 Income from Continuing Operations Total Other Income/Expenses Net Earnings Before Interest and Taxes Interest Expense Income Before Tax 4,969,000 1,004,000 3,965,000 1,296,000 Income Tax Expense Minority Interest Net Income From Continuing Ops 2,669,000