What I am doing is using all of the zero's. When I was in school in the caveman days we were taught how to do long division. When I went to college they tried to teach me the short cuts and I couldn't learn it.
So far I have come up with 5607 something but I am getting my zeros off at the end. This for part a. 5,000,000,000. I am thinking this is the right amount of zeros.

I use to be good in math but my brain doesn't work like it use to.
Ada