Where I Live

People ask me where I live.  I'll give you a very precise answer:

Earth

This answer is correct to one part in 3 × 10⁶⁸.
That number is approximately 300000000000000000000000000000000000000000000000000000000000000000000.

How do I figure this?  The radius of the earth is about 6378.1 kilometers.
The radius of the known universe is about 46 billion light years.  This is larger than the radius of the observed universe for technical reasons.
The volume of a sphere is proportional to the cube of the radius.  The cube of 6378 kilometers divided into the cube of 46 billion light years is that 3 × 10⁶⁸.

For your inner nerd:

6378.1 meters, cubed, equals: 2.605498×10¹¹cubic meters.
46 billion light years is 4.351843 × 10²⁶ meters.  Cubed, that is a volume of 8.24175458×10⁷⁹ cubic meters.

8.24175458×10⁷⁹ / 2.605498×10¹¹ =  3.1632×10⁶⁸.

This last is a very interesting number.  It has nearly the same digits as the square root of ten: 3.162277.  These two numbers match to 3 digits, which is more accurate than our measurements.  So they could be equal.

Which proves the universe is full of coincidences.
Okay, maybe it's not a proof.
Anyway, that's where I live.  So now you know.