Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

 (1): "d2"   was replaced by   "d^2". 

(2): "0.256" was replaced by "(256/1000)".

Step  1  :

             32
 Simplify   ———
            125

Equation at the end of step  1  :

                32
  ((d2) • f) • ———
               125

Step  2  :

Final result :

  32d2f
  —————
   125