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Participants calculate during All Japan Shuzan Championship in Kyoto on Aug. 8, 2023. Shuzan or soroban is a counting frame developed in Japan.( The Yomiuri Shimbun via AP Images Stock Photo - Alamy
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TikTok video showing how a conveyer belt sushi restaurant in Japan quickly calculates bills goes viral
![Participants calculate during All Japan Shuzan Championship in Kyoto on Aug. 8, 2023. Shuzan or soroban is a counting frame developed in Japan.( The Yomiuri Shimbun via AP Images Stock Photo - Alamy Participants calculate during All Japan Shuzan Championship in Kyoto on Aug. 8, 2023. Shuzan or soroban is a counting frame developed in Japan.( The Yomiuri Shimbun via AP Images Stock Photo - Alamy](https://c8.alamy.com/comp/2RG7TYH/participants-calculate-during-all-japan-shuzan-championship-in-kyoto-on-aug-8-2023-shuzan-or-soroban-is-a-counting-frame-developed-in-japan-the-yomiuri-shimbun-via-ap-images-2RG7TYH.jpg)
Participants calculate during All Japan Shuzan Championship in Kyoto on Aug. 8, 2023. Shuzan or soroban is a counting frame developed in Japan.( The Yomiuri Shimbun via AP Images Stock Photo - Alamy
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