NPV/ IRR/ MIRR

An investor invests $250,000 into a small business. The cash flows are 3 years @ $50,000, 4 years @ $60,000, 5 years @ $70,000 and 6 years @ $80,000. The required rate of return is 20%. The reinvestment rate is 5%. Provide the NPV, IRR and MIIRR.