Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "^-3" was replaced by "^(-3)".

Step  1  :

 1.1     6 = 2•3

(6)^-3 = (2•3)^(-3) = (2)^(-3) • (3)^(-3)

Final result :

     1              
  ——————— = 0.00463 
  (23•33)