Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

 (1): "f2"   was replaced by   "f^2". 

Step  1  :

            20
 Simplify   ——
            3 

Equation at the end of step  1  :

               20
  ((f2) • d) • ——
               3 

Step  2  :

Final result :

  20f2d
  —————
    3