Going from a million to a billion isn't some special relationship. It's just * 1000. It's the same as going 11000 or 101000.
I find it frustrating that people seem to think that someone going from 1M to 1B is somehow different to other numerical operations. It's not. It's 1000 times bigger, it's not a huge deal.
And any exponential growth is also a multiplication, it's not a big deal, just giving example on what they asked before.
Somehow people are interpreting this as some kind of math trick.
It's not a trick, our brains are not wire to deal with numbers growing quickly, but we do understand the math.