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$15,000 invested at 9% for 40 years

Future value

$471,141

Interest earned

$456,141

Total growth

3,040.94%

Investing $15,000 at 9% compounded annually for 40 years grows to $471,141. That's $456,141 of compound interest earned on your original $15,000.

FV = $15,000 × (1 + 9%)^40

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