Solution - Simplification or other simple results

Step  1  :

            1
 Simplify   —
            4

Equation at the end of step  1  :

  6   1
  — • —
  7   4

Step  2  :

            6
 Simplify   —
            7

Equation at the end of step  2  :

  6   1
  — • —
  7   4

Step  3  :

Final result :

   3           
  —— = 0.21429 
  14