Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "2009.1991" was replaced by "(20091991/10000)".

Step  1  :

            20091991
 Simplify   ————————
             10000  

Final result :

  20091991              
  ———————— = 2009.19910 
   10000