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     512 = 29

(512)^-2 = (2⁹)^(-2) = (2)^(-18)

Equation at the end of step  1  :

Step  2  :

          1       
 Divide  ———  by  3
         218      

Final result :

     1                                     
  ——————— = 1.27157 • 10-6 
  (218•3)