Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

 (1): "e1"   was replaced by   "e^1". 

Step  1  :

Equation at the end of step  1  :

  c -  (24•52de1999)

Step  2  :

Final result :

  c - 400de1999