早起きは 1/10000000000000 USドルの得。
江戸時代の1両は今のいくら？ - 貨幣博物館 < https://www.imes.boj.or.jp/cm/history/edojidaino1ryowa/ >
そばが16文なら10-e-13 usドルは低すぎか。
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