Window cleaner is a human calculator

A window cleaning maths genius claims he cannot find a job to test advanced maths skills. Numbers whizz Steve Borlase, 39, has a higher intelligence score than Carol Vorderman, Albert Einstein and Stephen Hawking. He can recite complicated equations while scrubbing windows for his day job, after claiming he was dropped on his head as a child. In less than 90 seconds he was able to complete this series of calculations: 53 x 7, 64 x 64, square root of 332, 19 x 19 / 3, 99 x 99 x 99, 7 x 21 x 29, and 47 x 49.