Compute the net cash inflow (incremental contribution margin minus incremental fixed expenses) anticipated from sale of the device for each year over the next six years. (Negative amounts should be indicated by a minus sign.) Incremental contribution margin Incrememental fixed expenses Net cash inflow (outflow) Year 1 Year 2 Year 3 Year 4-6 Using the data computed in (1) above and other data provided in the problem, determine the net present value of the proposed investment. (Negative amounts should be indicated by a minus sign. Round your final answer to the nearest whole dollar amount.) Net present value