Fractions of the Population

At this point, there are about 7.1 billion humans on this planet. 7,100,000,000. Or something like that. So for any category:

If you're one in a billion, there are seven like you.
If you're one in a million, there are 7,100 like you.
If you're one in a thousand, there are 7.1 million like you.

If you're in the 1%, there are 71 million like you.
If you're in the 1% of the 1%, there are 710,000 like you.
If you're in the 1% of the 1%, of the 1%, then you're one-in-a-million. (see above)