back-of-the-envelope calculation
/bˈakɒvðɪˈɛnvəlˌəʊp kˌalkjʊlˈeɪʃən/
Back-of-the-envelope calculation
01
簡単な計算, 大まかな見積もり
a rough estimate or calculation done quickly and informally, often using basic methods or assumptions
Idiom
Informal
例
I do n't need the exact amount. Just give me a back-of-the-envelope calculation.
正確な金額は必要ありません。大まかな計算を教えてください。
