Calculate the following ratios from the statements of the company for 2017-2019

Please show the calculations used for the work.

Earnings per Share

Return on Equity

Net profit margin

Earnings per Share

12/31/2019 USD Not Yes Thousands 12/31/2018 USD Not Yes Thousands 321084 321084 79996 79996 241088 12/31/2017 USD Not Yes Thousands 255066 255066 80175 80175 174891 410926 92182 318744 139772 63569 97489 97 54714 77714 589 51240 64411 1047 4766 81926 193858 -18967 74 300927 17817 44851 114291 247308 -6220 As Reported Annual Income Statement Report Date Currency Audit Status Consolidated Scale Services revenue Total net revenues Cost of services revenue Total cost of revenues Gross profit Research & development expenses Sales & marketing expenses General & administrative expenses Restructuring charges (credits) Gain (loss) on liquidation of textbooks Technology & development expenses Total operating expenses Income (loss) from operations Interest expense, net Interest (expense) income, net Other income (expense), net Total interest expense, net & other income (expense), net Income (loss) before income taxes - U.S. Income (loss) before income taxes - foreign Income (loss) before provision for (benefit from) income taxes Current provision (benefit) for income taxes - federal Current provision (benefit) for income taxes - state Current provision (benefit) for income taxes - foreign Total current provision (benefit) for income taxes Deferred provision (benefit) for income taxes - federal Deferred provision (benefit) for income taxes - state Deferred provision (benefit) for income taxes - foreign Total deferred provision (benefit) for income taxes Provision for benefit from) income taxes Net income (loss) Weighted average shares outstanding - basic Weighted average shares outstanding - diluted Year end shares outstanding Net earnings (loss) per share - basic Net earnings (Loss) per share - diluted Number of full time employees Number of common stockholders Foreign currency translation adjustments 20063 -24788 -12497 5526 -6971 -185 264 2594 2673 -17 42 -64 -39 2634 -9605 119204 119204 121583.501 -0.08 -0.08 1401 32 -745 -11225 3987 -7238 -18617 5159 -13458 -91 -73 1374 1210 155 76 -11 220 1430 -14888 113251 113251 115500.418 -0.13 -0.13 1087 39 -813 560 486 -20983 2502 -18481 -103 100 1523 1520 -992 75 1199 282 1802 -20283 100022 100022 109667.64 -0.2 -0.2 893 55 81