Blue Mountain Hardware is adding a new product line that will require an investment of $1, 450, 000 Managers estimate that this investment will have a 10-years life and generate net cash inflows of $305, 000 the first year, $290, 000 the second year, and $255, 000 each year thereafter for eight years. The investment has no residual value. Compute the payback period. First enter the formula, then calculate the payback period