A 14-year-old Indian math prodigy known as the "Human Calculator" says yoga meditation keeps his brain nimble. Aaryan Shukla, of Maharashtra, India, recently broke six world records in math in one day ...

Maggi Ajjayya, Kottur’s “Computer Man,” amazes social media with lightning-fast mental math. Despite only studying till 8th grade and surviving by begging, his calculation tricks have gone viral.

OK, Ari, what is 567 times 123? And you have exactly three seconds to answer, so you better move fast. SHAPIRO: You can't be serious right now, Juana. SUMMERS: (Laughter). SHAPIRO: There's no way ...