Question

bills video files take up 15 gigs of space on his hard drive about how many bytes is that

Answer 1

1 gig is 1,000,000,000 bytes.
We can do 15 times 1,000,000,000 to get 15,000,000,000.

So your answer is 15,000,000,000 gigs.

Answer 2

16106127360 I believe is the right answer.