Answer & explanation
The official answer, with Fermi’s reasoning step by step.
Answer & explanation
Official answer
4,190,000
wheels
How to estimate it
Fermi’s official “Napkin math”
Start with Italy, about 60 million people. How much Parmigiano does each one grate in a year? A bit on pasta most days, maybe 1.5 kilos. Double it for exports. A wheel weighs about 40 kilos.
- Italians
- 60,000,000
- 1.5 kg each, doubled for exports
- × 3 kg
- One wheel
- ÷ 40 kg
- 60M × 3 ÷ 40
- ≈ 4,500,000
Start with Italy, about 60 million people. How much Parmigiano does each one grate in a year? Maybe an ounce a week, so about 3 pounds. Double it for exports. A wheel weighs about 80 pounds.
- Italians
- 60,000,000
- 3 lb each, doubled for exports
- × 6 lb
- One wheel
- ÷ 80 lb
- 60M × 6 ÷ 80
- ≈ 4,500,000
Rounded assumptions may give a slightly different estimate. The official answer above is the game’s reference value.
Source calculation & reference
- Wheels made in 2025 (Consorzio del Parmigiano Reggiano)
- 4,189,945
- Wheels made in 2024, for scale
- 4,079,248 (+2.7%)
- Rounded, as the Consortium announced it
- ≈ 4,190,000
Reference cited by Fermi: Consorzio del Parmigiano Reggiano 2025 production figures (annual press conference, Milan, March 26, 2026): 4.19 million wheels
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