\begin{tabular}{|c|c|}
 \hline
 15239 : 15 = 1015 & 14 (E) \\
 1015 : 15 = 67 & 10 (A) \\
 67 : 15 = 4 & 7 \\
 7 : 15 = 0 & 7 \\
 \hline
\end{tabular}