what is 1 4/6 + 1 4/6 + 15/6 + 2 + 2 + 2 + 2 + 2 1/6 + 2 2/6 + 2 2/6 + 2 3/6 + 2 4/6 + 2 5/6 + 2 5/6 + 2 5/6 + 3 + 3 ?

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?