Lunch Savings Calculator

As I sit here eating my cheap “brown bag” lunch here as always at work, I thought I would calculate the small fortune I have amassed by eating like this (besides the fact that I get extra time to program and surf the Net!) My default investment return is 10.5% (the 70 year average for the S&P 500). I won’t even mention the 20+% returns of late, but I will let you increase the return up to 50% for fun.