2/7 divided by 1/7 is 2
When divided fractions, you flip the semiconductor fraction around so that bottom number is where the top number is, and the top number is where the bottom number is.
So, your new equation is
2 7
--- • ---
7 1
2 times 7 = 14
7 times 1 =7
14/7= 2
2/7 divided by 1/7=2