{"version":"1.0","type":"rich","title":"7を引けない、7桁も持てない。でも生活は詰まない――そろばんガチ勢への憧れと「計算を外に出す」技術","author_name":"めんどいちゃん","author_url":"https://mendoi-apps.com/about/","provider_name":"mendoi-apps","provider_url":"https://mendoi-apps.com/","cache_age":3600,"thumbnail_url":"https://mendoi-apps.com/media/articles/allja-b2b1d89cab1e4edf6459.jpg","thumbnail_width":1216,"thumbnail_height":640,"html":"<blockquote class=\"mendoi-embed\" lang=\"ja\" cite=\"https://mendoi-apps.com/articles/mental-arithmetic-abacus-working-memory-externalization/\"><p><a href=\"https://mendoi-apps.com/articles/mental-arithmetic-abacus-working-memory-externalization/\">7を引けない、7桁も持てない。でも生活は詰まない――そろばんガチ勢への憧れと「計算を外に出す」技術</a></p><p>暗算が苦手でも、今の生活はかなり普通に回る。</p><footer>めんどいちゃん · <a href=\"https://mendoi-apps.com/\">mendoi-apps</a></footer></blockquote>","width":600,"height":240}