You can put this solution on YOUR website! We know that a half a circle is 180 degrees, thus a full circle is 360 degrees.
Now you can say: 325 is to 4875 as x is to 360
Now solve for x by multiplying 360 on both sides of the eqn.
This will yield your answer.
I'm going to let you finish it.
Post a comment to this problem if you need further help. :)