Hello, I need help figuring out how to solve these. I have the solution (bolded) but can you provide a step by stepwhere to figure out the numbers and pvs if applicable the other ones online dont say how:

The Blue Goose is considering a project with an initial cost of $42,700. The project will produce cash inflows of $8,000 a year for the first two years and $12,000 a year for the following three years. What is the payback period?4.23 year