You can multiply using water with this container.

Only Exception: The Natural Log    • Only Exception: The Natural Log   When you pour water into this strangely shaped container, addition somehow turns into multiplication. The secret behind it was hidden in a certain graph. [BGM] https://commons.nicovideo.jp/works/nc... https://dova-s.jp/bgm/play2457.html    • 【公式・高音質】伝承の丘 - 秋山裕和【神秘的なケルト風音楽】   [Materials] Characters: VOICEVOX:ずんだもん (Zundamon, illustrated by sakamoto_AHR) VOICEVOX:四国めたん (Shikoku Metan, illustrated by sakamoto_AHR) (+ other tools) Backgrounds: pixabay and AI image generator Sound Effects: 効果音ラボ (soundeffect-lab.info) This video uses synthesized voices.