Allowing for rounding error, as a very rough estimate, I would suggest 1.
10 1's
There are 3 1's in 3.
-1
they have 1
2.3 recurring
there are 100 1's in 100.
There are 160 of them.
20 #1's in the US 17 #1's in the UK
160 of them.
there are 53 ones from 1-120
27
1