thank you in advance!

What is the Operating profit margin of Delta Airlines given the following Income Statement? Revenue 12,450 Cost of Goods Sold 5,500 Gross Profit 6,950 Selling, General and Administrative 5,000 Research and Development 600 Depreciation and Amortization 470 880 EBIT (Operating Income or Loss) Interest Expense 64 Income Before Tax 816 Income Tax Expense 350 Net Income 466