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$500 invested at 10% for 40 years

Future value

$22,630

Interest earned

$22,130

Total growth

4,425.93%

Investing $500 at 10% compounded annually for 40 years grows to $22,630. That's $22,130 of compound interest earned on your original $500.

FV = $500 × (1 + 10%)^40

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