help and show formulas for all please

Enter a fomula into each of the cells marked with a ? below Review Problem 1: Contrasting Variable and Absorption Costing Compute the Absorption Costing Unit Produet Cost Construct the Absorption Costing Income Statement \begin{tabular}{l|r|r|} \hline Sales & Year 1 & Year 2 \\ Cost of goods sold & 500,000 & $300,000 \\ \hline Gross margin & ? & ? \\ \hline Selling and administrative expenses & ? & ? \\ \hline Net operating income & ? & ? \\ \hline Compute the Variable Costing Unit Product Cost & & \\ \hline & Year 1 & Year 2 \\ \hline Direct materials & ? & ? \\ \hline Direct labor & ? & ? \\ \hline Variable manufacturing overhead & ? & ? \\ \hline Variable costing unit product cost & ? & ? \\ \hline \end{tabular} Construct the Variable Costing Income Statement Sales Variable expenses: Variable cost of goods sold Variable selling and administrative expenses Contribution margin Fixed expenses: Fixed manufacturing overhead Fixed selling and administrative expenses Net operating income