Compute the gross profit using the using the FIFO inventory costing method. Gross profit is using the FIFO inventory costing method. Compute the gross profit using the using the FIFO inventory costing method. Gross profit is using the FIFO inventory costing method. \begin{tabular}{|c|c|c|c|} \hline Dec. 1 Beginning merchandise inventory & 13 & units@\$ & 9 each \\ \hline 8 Sale & 8 & units@\$ & 22 each \\ \hline 14 Purchase & 16 & units@\$ & 14 each \\ \hline 21 Sale & 14 & units@\$ & 22 each \\ \hline \end{tabular}