How do we keep finding extra digits of pi?

Chris Smith put this question to mathmetician Timothy RevellTim - That’s a really good question. So what is pi, let’s start with that? You grab your favourite circle and we call the distance around the outside the circumference. And we call the width, making sure you go through the middle the diameter. If you divide the circumference by the diameter, then you end up with

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How do we keep finding extra digits of pi?

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