Answer:
Explanation:
100 billion = 100 000 000 000
Count the zeros. There are 11 of them. Therefore the order of magnitude is roughly 10^11
The universe has 10^21
So you need to compare the two numbers
10^21/10^11
10^(21 - 11)
10^10
There are roughly 10^10 more stars in the universe than in the milky way. Both numbers are unimaginably large.