Calculate the cash payback period and net present value of the proposed investment. (If the net present value is negative, use either a negative sign preceding the number eg.-45 or parentheses e.g. (45). Round cash payback period to 2 decimal place, eg. 12.51. For calculation purposes, use 5 decimal places as displayed in the factor table provided, e.g. 1.25124 and net present value to O decimal places, e.g. 5,275.) Click here to view the factor table. Cash payback period Net present value 7.47 years 5739.115