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): "0.78" was replaced by "(78/100)".

Step  1  :

            39
 Simplify   ——
            50

Equation at the end of step  1  :

               39
  ((d2) • f) • ——
               50

Step  2  :

Final result :

  39d2f
  —————
   50