Aside from clerical work, all accounting jobs at Todo-za were carried about by persons with visual and hearing disabilities, and it was revealed that their memory and calculation skills were so precise that not even the slightest inaccuracy could be found.
当道の会計も書記以外はすべて視覚障害者によって行なわれたが、彼らの記憶と計算は確実で、一文の誤りもなかったという。