Nabors, Inc. 2018 statement of comprehensive income ($ in millions) Net sales Less: Cost of goods sold Less: Depreciation Earnings before interest and taxes Less: Interest paid Taxable income Less: Taxes Net income $9,610 6,3101 1,370 1,930 6301 $1,300 455 $845 Nabors, Inc. 2017 and 2018 Statement of financial positions ($ in millions) 2017 2018 2017 Cash $310 $405 Accounts payable $2,720 Accounts rec. 2,640 3,055 Notes payable 1001 Inventory 3,2751 3,850 Total $2,8201 Total $6,225 $7,310 Long-term debt 7,875 Net fixed assets 10,960 10,670 Common stock 5,000 Retained earnings 1,490 Total assets $17,185 $17,980 Total liab. & equity $17,185 2018 $2,5701 01 $2,570 8,100 5,250 2,0601 $17,980 What is the operating cash flow for 2018 ($ in millions)