Solution - Simplification or other simple results

Step  1  :

            3
 Simplify   —
            7

Equation at the end of step  1  :

  4   3
  — • —
  3   7

Step  2  :

            4
 Simplify   —
            3

Equation at the end of step  2  :

  4   3
  — • —
  3   7

Step  3  :

Final result :

  4           
  — = 0.57143 
  7