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Old March 30th 17, 07:53 PM posted to uk.tech.digital-tv
Paul Ratcliffe
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Posts: 2,442
Default Hopeless at maths

On Thu, 30 Mar 2017 20:00:32 +0100, Mark Carver
wrote:

So in 2.5 years

2.3635637 x 10^16 metres

2.3635637 x 10^13 km

So 2.3635637 x 10^13 km / 250 x 10^3 = 9.4542548 x 10^7


Yeah, but he said 2.5 million light years, so multiply that by 10^6.

Therefore if a human hair represents 250km, it's 94.5 million hairs to
Andromedia


94.5 x 10^12 hairs.

Which is 94.5 x 10^12 x 0.2mm, which is 18.9 million km, which is a
bloody long way for a kid to comprehend.
Or about 472 times round the Earth's equator.