Solution - Simplification or other simple results

Step  1  :

            13
 Simplify   ——
            2 

Equation at the end of step  1  :

  4   13
  — • ——
  6   2 

Step  2  :

            2
 Simplify   —
            3

Equation at the end of step  2  :

  2   13
  — • ——
  3   2 

Step  3  :

Final result :

  13           
  —— = 4.33333 
  3