Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

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

Step  1  :

 1.1     25 = 52

(25)^-1 = (5²)^(-1) = (5)^(-2)

Equation at the end of step  1  :

Step  2  :

          1      
 Divide  ——  by  2
         52      

Final result :

   1           
  —— = 0.02000 
  50