Aaryan Shukla, a 14-year-old genius from Maharashtra, India, amazed a huge crowd with his lightning-fast mental math skills on the Italian TV show Lo Show Dei Record . He smashed the record for the quickest time to mentally add 50 five-digit numbers, finishing in just 25.19 seconds—that’s about one addition every half a second! This ‘human calculator’ could likely outpace you entering the numbers into a calculator.