Need help with the grey-shaded areas. Please include the formulas!

\begin{tabular}{|c|c|c|c|c|c|c|} \hline & A & B & C & D & E & F \\ \hline \multicolumn{7}{|l|}{1} \\ \hline 2 & & Company Data & Per Unit & Total & & \\ \hline 3 & & Direct Materials & 14 & $210,000 & & \\ \hline 4 & & Direct Labor & 10 & $150,000 & & \\ \hline 5 & & Variable OH & 3 & 45,000 & & \\ \hline 6 & & Fixed OH Tracible (Sup Salaries & 2 & 30,000 & & \\ \hline 7 & & Fixed OH Tracible (Depreciation) & 4 & 60,000 & & \\ \hline 8 & & Fixed OH Allocated & 9 & $135,000 & & \\ \hline 9 & & Total Cost & 42 & $630,000 & & \\ \hline 10 & & Units produced per year & & 15,000 & & \\ \hline \multicolumn{7}{|l|}{11} \\ \hline 12 & & \multicolumn{5}{|c|}{ Instead of producing the product, you can just purchase it from an outside supplier for $35/ unit } \\ \hline \multicolumn{7}{|l|}{13} \\ \hline 14 & 1 & \multicolumn{3}{|c|}{1 Perform an differential Analysis on whether to make or buy } & & \\ \hline 15 & & & (Produce) & (Outside Sup) & & \\ \hline 16 & & Relevant Costs & Make & Buy & Diff Analysis (Buy) & \\ \hline 17 & & Direct Materials & & & $ & \\ \hline 18 & & Direct Labor & & & $ & \\ \hline 19 & & Variable OH & & & $ & \\ \hline 20 & & Fixed OH Tracible (Sup Salaries & & & $ & \\ \hline 21 & & Purchase Price if Buy & & & $ & \\ \hline \multicolumn{7}{|l|}{22} \\ \hline 23 & & Incremental Profit (Loss) & & & & \\ \hline \\ \hline 25 & & Decision & & & & \\ \hline \multicolumn{7}{|l|}{26} \\ \hline \multicolumn{7}{|l|}{27} \\ \hline 28 & & & & & & \\ \hline \end{tabular}