Like most in his trade comedian Matt Parker has learned to look at the world from an unusual angle.

But it's the skills from his former career as a maths teacher which mean he can view modern life and see the series of simple equations which underpin it.

But he hasn't left his love of numbers - or teaching - behind as a stand-up pro.

The videos on his educational YouTube channel Stand-up Maths have been viewed more than 50 million times.

So he is well qualified to guide you through the bizarre and often comical results when a few calculations go awry in the real world.

The author of Humble Pi shares his favourite maths gaffes - from the simple error that left a passenger plane flying on empty (don't worry: it ended safely) to the computer fail that accidentally rebranded Mahatma Gandhi as a nuke-obsessed warlord.

Matt also explains what you can learn from them.

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