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): "0.7" was replaced by "(7/10)".

Step  1  :

             7
 Simplify   ——
            10

Equation at the end of step  1  :

                7
  ((d2) • f) • ——
               10

Step  2  :

Final result :

  7d2f
  ————
   10