Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "6.7" was replaced by "(67/10)".

Step  1  :

            67
 Simplify   ——
            10

Equation at the end of step  1  :

         67
  2000 • ——
         10

Step  2  :

Final result :

  13400