Explain What Compound Interest Is Using a Simple Example

Everyone calls compound interest a wonder of the world and almost nobody can show you how it works. This prompt explains it in plain language with a worked example using realistic numbers, shows how it beats simple interest over the same stretch, and makes the long-term effect land emotionally. Good for anyone who wants the maths to finally click.

<context>
Compound interest is described as the eighth wonder of the world, yet most people have only a vague sense of how it works. A clear example with actual numbers is worth more than any definition.
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<task>
Explain compound interest in plain language, using a worked example with realistic numbers. Show how it differs from simple interest over the same period. Make the long-term impact emotionally tangible, not just mathematically correct.
</task>
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Three paragraphs: Simple Interest Example (with numbers), Compound Interest Example (same principal, same rate, same period, with numbers), and The Long-Term Difference (extend one of the examples to 30 years and describe the emotional weight of the difference). Under 250 words. No financial jargon.
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