Class problem: You want to be a millionaire in 30 years. you expect to earn an average return of 15% in the stock market each year. how much do you need to save each year? I got 2264.46 but the professor got 2300.19. Not sure what I did wrong. I used this formula: C=(FV*r)/(1+r)^t-1; The professor used C= FV/(1+r)^t-1.

C=coupon payment

r= rate

t= # periods