Roberts Hardware is adding a new product line that will require an investment of $$1,454,000.$ Managers estimate that this investment will have a $10-$year life and generate net cash inflows of $$300,000$ the first year, $$280,000$ the second year, and $$240,000$ each year thereafter for eight years. Compute the payback period. Round to one decimal place.

The payback in years is$\_\_\_$