Radio 5 live puts the 'human calculator' through his paces

Help

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 06:00 to 09:00 on Radio 5 live.

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.