Roberts Hardware is adding a new product line that will require an investment of $$1,476,000.$ Managers estimate that this investment will have a $10-$year life and generate net cash inflows of $$320,000$ the first year, $$250,000$ the second year, and $$240,000$ each year thereafter for $8$ years. Compute the payback period. Round to one decimal place.

Payback in years $=$