Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "1." was replaced by "(1/1)".

Step  1  :

            1
 Simplify   —
            1

Equation at the end of step  1  :

  12
  ——
  1 

Step  2  :

            12
 Simplify   ——
            1 

Final result :

  12