Decode a Credit Card Statement

Your statement arrives and you pay the minimum without quite knowing what the rest of it means. This translates each section: how the balances relate, why the minimum payment quietly costs you, with a worked example of the interest over a year, and how to spot anything off in the transaction list. Pay it knowing what you're actually being charged.

<context>
You have received a credit card statement from {CARD_ISSUER} and want to understand every line before making a payment.
</context>

<task>
**Translate each section into plain language:**
1. Opening and closing balances: what they mean and how they relate
2. Minimum payment: why paying only the minimum is costly, with a worked example of total interest over 12 months
3. Transaction list: how to spot potential fraud or unexpected charges
4. Interest charges: where the interest came from and how to avoid it next month
5. Credit limit and utilisation: why the percentage matters for your credit score
</task>

<output_format>
- Section-by-section explanation in plain English
- A "three things to do before your next statement" action list at the end
</output_format>