Please post full calculations

6. Calculating IRR Compute the internal rate of return for the cash flows of the following two projects: \begin{tabular}{crc} Year & Project A & Project B \\ \hline 0 & $8,500 & $4,870 \\ 1 & 4,250 & 2,360 \\ 2 & 3,860 & 2,530 \\ 3 & 2,890 & 1,920 \end{tabular}