Please show how to do with excel and show work, I need to know how to do it, not necessarily the answer. Thanks!

Find the net present value (NPV) for a proposed project costing $49,135. Assume that the appropriate cost of capital for projects of this risk level, at this company is 15.61%, and the estimated cash flows for the life of the project are as follows: Year 3 Year 7 Year 8 Year 1 $10,768 Year 2 $15,538 Year 4 $11,093 Year 5 $10,364 Year 6 $6,834 $10,591 $9,641 $17,200