Don't use excel for this. Show calculations step$-$by$-$step

The Sisyphean Company is planning on investing in a new project. This will involve the

purchase of some new machinery costing $$400,000.$ The Sisyphean Company expects cash

inflows from this project as detailed below:

The appropriate discount rate for this project is $15\%.$ What is the internal rate of return $($IRR$)$ for

this project? And will you accept this project or not and why? $($Show your work.$)$