bn:03351006n
Noun Concept
Categories: Metaphors referring to objects, Informal estimation, Approximations
EN
back-of-the-envelope calculation  Back of the Envelope Calculations  BOTEC  back-of-a-napkin calculation  Back-of-envelope calculation
EN
A back-of-the-envelope calculation is a rough calculation, typically jotted down on any available scrap of paper such as an envelope. Wikipedia
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