Russian Multiplication - Numberphile

Johnny Ball on Russian and Egyptian Multiplication. Check out Brilliant (get 20% off their premium service): (sponsor) More links & stuff in full description below ↓↓↓ More on Johnny Ball, including his books and live shows: Russian multiplication is also known as Ethiopian multiplication. Why Use Binary? (on Computerphile) - Discuss on Brady’s subreddit: Numberphile is supported by the M