Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "^-4" was replaced by "^(-4)".

Step  1  :

 1.1     125 = 53

(125)^-4 = (5³)^(-4) = (5)^(-12)

Equation at the end of step  1  :

Step  2  :

          1       
 Divide  ———  by  3
         512      

Final result :

     1                                     
  ——————— = 1.36533 • 10-9 
  (512•3)