Can you show me the math on how to get this answer:

\begin{tabular}{|c|c|c|l|} \hline Cost & 5.00000% & & \\ \hline Cash flows & Year & \( \begin{array}{c}\text { Discounted CF } \\ \text { Cash flow/(1+co } \\ \text { st)^year }\end{array} \) & Cumulative cash flow \\ \hline(15,000.00) & 0 & -15000.00 & (15,000.00) \\ \hline 2,000.00 & 1 & 1904.76 & (13,095.24) \\ \hline 2,000.00 & 2 & 1814.06 & (11,281.18) \\ \hline 2,000.00 & 3 & 1727.68 & (9,553.50) \\ \hline 2,000.00 & 4 & 1645.40 & (7,908.10) \\ \hline 2,000.00 & 5 & 1567.05 & (6,341.05) \\ \hline 2,000.00 & 6 & 1492.43 & (4,848.62) \\ \hline 2,000.00 & 7 & 1421.36 & (3,427.25) \\ \hline 2,000.00 & 8 & 1353.68 & (2,073.57) \\ \hline 2,000.00 & 9 & 1289.22 & (784.36) \\ \hline 2,000.00 & 10 & 1227.83 & \\ \hline \end{tabular}