Estimate [a quantity] to
within an order of magnitude
using only what I could
reasonably know. Every
assumption on its own line,
so I see what dominates.

Fermi Estimate a Physical Quantity

Every assumption on its own line, so you can see what dominates.

Prompt

Estimate [a physical quantity] to within an order of magnitude using only things I could reasonably know. Show every assumption as a separate line so I can see which one dominates the uncertainty.