Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "^-2" was replaced by "^(-2)".

Step  1  :

 1.1     4 = 22

(4)^-2 = (2²)^(-2) = (2)^(-4)

Final result :

   1           
  —— = 0.06250 
  24