From the income statement above, which figures/categories represent net income? or have to be added for net income? What is the total net income for the year 2020?

\begin{tabular}{|c|c|c|c|c|} \hline \multirow[b]{3}{*}{ Revenue } & \multicolumn{4}{|c|}{ ed Decer } \\ \hline & \multicolumn{2}{|c|}{2019} & 2020 & 2021 \\ \hline & $ & 4,805,239$ & 3,378,199$ & 5,991,760 \\ \hline \multicolumn{5}{|l|}{ Costs and expenses: } \\ \hline Cost of revenue & & 1,196,313 & 876,042 & 1,155,833 \\ \hline Product development & & 976,695 & 2,752,872 & 1,425,048 \\ \hline Sales and marketing & & 1,621,519 & 1,175,325 & 1,186,332 \\ \hline General and administrative & & 697,181 & 1,134,851 & 835,324 \\ \hline Restructuring charges & & - & 151,355 & 112,849 \\ \hline Total costs and expenses & & 5,306,782 & 6,968,346 & 5,562,443 \\ \hline Income (loss) from operations & & (501,543) & (3,590,147) & 429,317 \\ \hline Interest income & & 85,902 & 27,117 & 12,734 \\ \hline Interest expense & & (9,968) & (171,688) & (437,599) \\ \hline Other income (expense), net & & 13,906 & (947,220) & (304,659) \\ \hline Loss before income taxes & & (411,703) & (4,681,938) & (300,207) \\ \hline Provision for (benefit from) income taxes & & 262,636 & (97,222) & 51,827 \\ \hline Net loss & $ & (674,339)$ & (4,584,716)$ & (352,034) \\ \hline Net loss per share attributable to Class A and Class B common stockholders, basic and diluted & $ & (2.59)$ & (16.12)$ & (0.57) \\ \hline \end{tabular}