Solution - Simplification or other simple results

Step  1  :

            6
 Simplify   —
            7

Equation at the end of step  1  :

  4   6
  — • —
  5   7

Step  2  :

            4
 Simplify   —
            5

Equation at the end of step  2  :

  4   6
  — • —
  5   7

Step  3  :

Final result :

  24           
  —— = 0.68571 
  35