I think c=9. I did the math...just trying to help but not exactly sure but I think it is...sorry
Of the 16 small intervals indicated from 0 to 1 inch, the ant spans 14 of them, so

How is 7/8 equal to 0.875?
Since 125(8)=1000 and 125(7)=875 we know

Answer:
you could ask a friend or someone you are close to, to proof read it. You could also but it through Grammarly to find all errors that someone could just overlook.
Tbh I really don't know so I guess you can check if this is right; 22,200 miles :]