$3,000 invested at 5% for 40 years
Future value
$21,120
Interest earned
$18,120
Total growth
603.999%
Investing $3,000 at 5% compounded annually for 40 years grows to $21,120. That's $18,120 of compound interest earned on your original $3,000.
FV = $3,000 × (1 + 5%)^40
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