E26-19 Using payback to make captial investment decisions

Rapp Hardware is adding a new product line that will require an investment of $1,418,000. Managers estimate that this investment will have a 10-year life and generate net cash inflows of $310,000 the first year, $290,000 the second year, and $250,000 each year thereafter for eight years. Compute the payback period. Round to one decimal place.

Please list the step-by-step process, thank you!