How Liam Delap is able to work out cube roots quickly and look like a maths genius, and the simple trick you can learn to do it yourself

Liam Delap warming up for Chelsea.

Liam Delap has an interesting party trick that you wouldn't really expect a footballer to pull out of the bag.

The Chelsea forward has gone on video a few times showing off his bizarre mathematical ability to quickly calculate the cube roots of large numbers.