Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "0.0075" was replaced by "(0075/10000)".

Step  1  :

             3 
 Simplify   ———
            400

Equation at the end of step  1  :

   3 
  ——— • a
  400

Step  2  :

Final result :

   3a
  ———
  400