For math genius Scott Flansburg, the world just makes too much sense. A math teacher for the past 28 years, Flansburg solves equations at superhuman speed. The 53-year-old owns the mark recognized by ...

Watch as a human calculator competes against a traditional calculator in a series of challenging math problems. This engaging ...

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 ...