Solution - Simplification or other simple results

Step  1  :

            1
 Simplify   —
            3

Equation at the end of step  1  :

  7   1
  — • —
  3   3

Step  2  :

            7
 Simplify   —
            3

Equation at the end of step  2  :

  7   1
  — • —
  3   3

Step  3  :

Final result :

  7           
  — = 0.77778 
  9