please calcuate the 2018 years ended 12/31/18 current ratio for twitter and pleae show work

Year Ended December 31, 2018 2017 2016 2015 2014 (In thousands) Cost of revenue..... 17,289 $ 23,849 $ 29,502 $ 40,705 $ 50,536 Research and development.... 183,799 240,833 335,498 401,537 360,726 Sales and marketing ........ 71,305 94,135 160,935 156,904 157,263 General and administrative 53,835 74,989 89,298 82,972 63,072 Total stock-based compensation $ 326,228 $ 433,806 $ 615,233 $ 682,118 $631,597 Provision (benefit) for income taxes includes the impact of the Tax Act. Refer to Note 14 of the Notes to Consolidated Financial Statements included in Part II, Item 8 of this Annual Report on Form 10-K for further information. In the year ended December 31, 2018, we recorded a net benefit to tax expense of $845.1 million associated with the release of the valuation allowance related to Brazil and most of the Unit and most of the United States federal and all states deferred tax assets with the exception of California and Massachusetts. See the section titled "Non-GAAP Financial Measures" below for additional information and a reconciliation of net income (loss) to Adjusted EBITDA and net income (loss) to non-GAAP net income. 13845.1 million wance related to Brazil and most of the 2017 As of December 31, 11 2016 (In thousands) 2015 2014 Consolidated Balance Sheet Data: Cash and cash equivalents. Short-term investments....... Property and equipment, net .... Total assets... Convertible notes.. Total liabilities.. Total stockholders' equity. $ 1,894,444 $1,638,413 $ 988,598 $ 911,471 $1,510,724 4,314,957 2,764,689 2,785,981 2,583,877 2,111,154 885,078 773,715 783,901 735,299 557,019 10,162,572 7,412,477 6,870,365 6,442,4395,583,082 2,628,250 1,627,460 1,538,967 1,455,095 1,376,020 3,356,978 2,365,259 2,265,430 2,074,392 1,956,679 6,805,594 5,047,218 4,604,935 4,368,047 3,626,403 Non-GAAP Financial Measures To supplement our consolidated financial statements presented in accordance with generally accepted accounting principles in the United States, or GAAP, we consider certain financial measures that are not prepared in accordance with GAAP, including Adjusted EBITDA, non-GAAP income before income taxes, non-GAAP provision for income taxes as it relates to the calculation of non-GAAP net income, and non-GAAP net income. These non-GAAP financial measures are t 49 / 130 The consolidated statements of operations data for the years ended December 31, 2018, 2017 and 2016 and the consolidated balance sheet data as of December 31, 2018 and 2017 are derived from our audited consolidated financial statements included in Part II, Item 8, "Financial Statements and Supplementary Data" in this Annual Report on Form 10-K. The consolidated statements of operations data for the years ended December 31, 2015 and 2014 and the consolidated balance sheet data as of December 31, 2016, 2015 and 2014 are derived from our audited consolidated financial statements not included in this Annual Report on Form 10-K. Our historical results are not necessarily indicative of the results that may be expected in the future. e consolidated statemente financial Statements and c are derived from our au Tinancial statements et data as of December for the years ended Dewata in this Annual Bondated financial suns that may be expected Annual Report on Form and 2014 are derived from and 2014 and the 2018 Year Ended December 31, 2017 2016 2015 (In thousands, except per share data) 2014 $3,042,359 $2,443,299 $2,529,619 $2,218,032 $1,403,002 Consolidated Statement of Operations Data: Revenue!!)... Costs and expenses(2) Cost of revenue. Research and development. Sales and marketing General and administrative... Total costs and expenses Income (loss) from operations. Interest expense. Interest income.... Other income (expense), net.. Income (loss) before income taxes.. Provision (benefit) for income taxes(3) Net income (loss) Matincome assersbarn attributable to common 964,997861.242 861,242 932 240 932,240 729,256 446,309 553,858 542,010 713,482 806,648 691,543 771,361 717,419 957,829 871,491 614,110 298,818 283,888 293 276 260,673 189,906 2,589,034 2.404,559 2,896,827 2,668,068 1,941,868 453,325 38,740 (367,208) (450,036) (538,866) (132,606) (105,237) (99,968) (98,178) (35,918) 111,221 44,383 24,277 9,073 1,933 (8,396) (73,304) 2,065 5,836 (5,500) 423,544 (95,418) (440,834) (533,305) (578,351) (782,052) 12,645 16,039 (12,274) (531) $1,205,596 $ (108,063) $ (456,873) $ (521,031) $ (577,820) ulcu 2017) 423,544 (95,418) (440,834) (533,305) (578,351) (782,052) 12,645 16,039 (12,274) (531) $1,205,596 $ (108,063) $ (456,873) $ (521,031) $ (577,820) $ $ Income (loss) before income taxes. Provision (benefit) for income taxes(3) Net income (loss) Net income (loss) per share attributable to common stockholders: Basic.. Diluted Weighted-average shares used to compute net income (loss) per share attributable to common stockholders: Basic..... Diluted. Other Financial Information:(4) Adjusted EBITDA... Non-GAAP net income.. 1.60 $ 1.56 $ (0.15) $ 0.15) $ (0.65) $ (0.65) $ (0.79) $ (0.79) $ (0.96) (0.96) 754,326 772.686 732.702 732.702 702,135 702.135 662,424 6 62.424 604,990 604,990 $1,200,796 $ 862,986 $ 751,493 $ 557,807 $ 300,896 $ 663,804 $ 328,859 $ 264,406 $ 180,486 $ 68,438