Question

What is the relationship between the 1s in 911,147,835

Answer 1

Is this is was you mean:
The one in (91)1 is 10 times the one in 91(1). Same with the one is 147.

Answer 2

I'm not completely sure what you're asking, but if i understand right, it could be that if you add 5 and 3 you get 8, or if you subtract 3 from 8 you get 5.

Hope this helps in some way!