How does 20,821 + 3226 = 24,578?

and

How does 16,398 + 2,770 = $20,509?

What am I missing here?

Set up the spreadsheet with the SCIM equations. that are given in the exhibit. For example, Total automotive sales is the sum of Automotive sales and Automotive leasing. Further, Total sales is the sum of Total automotive sales, and Services and other. The idea is to make the spreadsheet capture potential changes in the detail accounts. So, if Automotive sales changes, the Total automotive sales and Total sales number automatically change to reflect the update. \begin{tabular}{|c|c|c|} \hline exhlblt 1.6 & \multicolumn{2}{|c|}{\begin{tabular}{l} Current Yearly Financials \\ (\$millions) for eCar \end{tabular}} \\ \hline \multicolumn{3}{|l|}{ Annual Sales } \\ \hline \multicolumn{2}{|c|}{ Automobile sales } & $19,952 \\ \hline \multicolumn{2}{|c|}{ Automotive leasing } & 869 \\ \hline \multicolumn{2}{|c|}{ Total automotive sales } & 20,821 \\ \hline \multicolumn{2}{|c|}{ Services and other } & 3,226 \\ \hline \multicolumn{2}{|l|}{ Total sales } & $24,578 \\ \hline \multicolumn{3}{|c|}{ Cost of Goods Sold (COGS) } \\ \hline \multicolumn{2}{|c|}{ Automotive sales } & $15,939 \\ \hline \multicolumn{2}{|c|}{ Automotive leasing } & 459 \\ \hline \multicolumn{2}{|c|}{ Total automotive COGS } & $16,398 \\ \hline \multicolumn{2}{|c|}{ Services and other } & 2,770 \\ \hline \multicolumn{2}{|c|}{ Total COGS } & $20,509 \\ \hline \end{tabular}