Important Bellwork!

This bellwork is going to keep coming up in the next few weeks.

If the Earth takes 365.25 days to revolve around the Sun and is 1 astronomic unit from the Sun, how many astronomic units is Mars if it takes 686.9 days to revolve around the Sun? 

 

How many astronomic units is Saturn, if it takes 10832 days to revolve around the Sun?