Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "0.000000084" was replaced by "(000000084/1000000000)".

Step  1  :

                21   
 Simplify   —————————
            250000000

Final result :

      21              
  ————————— = 0.00000 
  250000000