Scott Flansburg holds the Guinness World Record for fastest human calculator for adding the same number to itself more times in 15 seconds than a person could do with a calculator.
The American mathematician is dedicated to helping adults and students to get over their fear of the subject by entertaining them.
Radio 5 live Breakfast challenged him to some mental arithmetics.
To hear other 5 live interviews, please visit the best bits page.
Breakfast broadcasts weekdays 0600 to 0900 on Radio 5 live.
Article source: http://www.bbc.co.uk/go/rss/int/news/-/news/uk-16813132
