This was a problem in my notes. And somehow the steps are adding 2178.598 + 2117.199 = 4295.788. Subtract that by 5000 and I have -704. Then use that to solve IRR. But my question is I have no idea where I got 2178.598 or 2117.199. Can someone please help me find where those numbers come from?

3. A project costs $5,000 to install will provide the following cash flows: Years 1-3: $800, Years 4-6: $900. Is this project worth pursuing? Compute the IRR to decide. The discount rate is 10%