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This video of "the human calculator" was one of your favourite videos in 2025, so we're sharing it again. Samiullah got his nickname because of the impressive calculations he can do in his head. Originally from Afghanistan, he now lives in Pakistan where he's been amazing locals with his maths skills - addition, subtraction, division and multiplication. He can do it all! 🎧 Why some of us are worse at maths than others: https://bbc.in/3UPzpYb | BBC World Service

1.1M views · 3.1K reactions | Could you solve this equation in seven...