How do I calculate the Net Present Value?

		After Tax
Item	Year	Amount
Cost of machine	0	$ (1,570,000.00)
Year 1 inflow	1	$ 240,591.67
Year 2 inflow	2	$ 211,277.95
Year 3 inflow	3	$ 185,553.11
Year 4 inflow	4	$ 162,951.41
Year 5 inflow	5	$ 143,089.31
Year 6 inflow	6	$ 125,665.45
Year 7 inflow	7	$ 110,351.09
Year 8 inflow	8	$ 96,927.05
Year 9 inflow	9	$ 85,119.37
Year 10 inflow	10	$ 74,736.29
Year 11 inflow	11	$ 65,640.82
Year 12 inflow	12	$ 57,641.18
		$ 10,309.60

Internal Rate of Return

13.87%

Modified Internal Rate of Return

11.67%

Net Present Value

$10.13