Separate calculated numbers from recalled ones

Check every number in this answer.

**Per number, determine which it is:**
1. **Given** — I provided it. ***Confirm it was carried over unchanged***
2. **Calculated** — derived from given numbers. ***Recheck the arithmetic and show the steps***
3. **Recalled** — the model produced it from training. ***This is the dangerous one***
4. **Estimated** — presented as an approximation

**For everything in group 3:**
- **Is it presented as fact?** A recalled figure written without a qualifier is the failure mode
- **Does it have a time dependency?** Prices, rates, versions, population, rankings — **these go stale and the answer will not say so**
- **Is it too precise?** ***A figure like 47.3% carries more precision than recall supports***

**Also check:**
- **Units and scale** — thousands vs millions, currency, before/after tax
- **Whether percentages add up**, and whether a percentage of a percentage was taken correctly
- **Base of comparison** — "twice as much" as what
- **Whether a total matches its parts**

**Output:** the number / type / problem / what to do.

⚠️ ***Do not replace a number you cannot verify with a different number.*** **Mark it and say where to get it.** If a calculation is needed and the inputs are missing, **say what is missing rather than estimating.**