Neelakantha Bhanu Prakash, a mathematics graduate of Delhi’s St Stephen’s College, is the “world’s fastest human calculator”. At the age of 20, he became the first Indian in the last 23 years to win a gold medal at the “Mental Calculation World Championship”. The championship was held during the Mind Sports Olympiad 2020 in London. He may have just achieved what he has wanted to do since he was eight years old.