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Dear fools, this is my first posting on this board. My wife and I are trying to gauge where we are with our retirement planning and I'd like to start by doing some very basic calculations. Specifically, I need a formula for compounding. The question I need to answer is this: If I take X dollars and invest it for N years at an average annual rate of return of Y, what will I end up with after N = 5, 10, 15, 20 years etc. I would be most greatful if someone could provide me with the formula for calculating this! Many thanks in advance! -Jack

P.S. The model I have in mind is based on an investment in the stock market which, since it's inception, has returned an average of about 10.5%/yr, hence I'm starting with an assumed Y value of 10.5% which I can then adjust to provide different scenarios.
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