Please show every step on the financial calculator. I don't just need answers - I need to know how to do it. I keep getting -2.183 but the answer is 474.. how do you get that?

2. Your roommate has decided to start a cat grooming business and you are her first investor! You have agreed to invest $500 today and an additional $500 next year. You expect to receive $300 per year for 6 years beginning two years from today. If you assume a discount rate of 5%, what is the expected NPV of your investment