Solution - Simplification or other simple results

Step  1  :

            1
 Simplify   —
            3

Equation at the end of step  1  :

  36   1
  —— • —
  3    3

Step  2  :

            12
 Simplify   ——
            1 

Equation at the end of step  2  :

       1
  12 • —
       3

Step  3  :

Final result :

  4