What is the total discount payback period?

\begin{tabular}{|c|c|c|c|c|} \hline \multicolumn{3}{|c|}{ Discounted Payback Period } & \multirow[b]{2}{*}{ Cumultv Discd CFs } & \\ \hline Total Project CFs & CFs & PV of CFs & & \\ \hline Year 0 & 2,200,000 & 2,200,000 & 2,200,000 & Discd payback yr \\ \hline Year 1 & 4,255,000 & $4,255,000.00 & $2,055,000.00 & Portion of year \\ \hline Year 2 & 6,320,700 & $10,575,700.00 & $12,630,700.00 & \\ \hline Year 3 & 4,080,525 & $14,656,225.00 & $27,286,925.00 & \\ \hline Year 4 & 2,948,450 & $17,604,675.00 & $44,891,600.00 & \\ \hline Year 5 & 2,366,225 & $19,970,900.00 & $64,862,500.00 & \\ \hline Year 6 & 1,438,060 & $21,408,960.00 & $86,271,460.00 & \\ \hline Required rate & 12% & & Total Discd payback & \\ \hline \end{tabular}