Solution - Simplification or other simple results

Step  1  :

            7
 Simplify   —
            8

Equation at the end of step  1  :

   4    6    7
  (— • ——) • —
   7   11    8

Step  2  :

             6
 Simplify   ——
            11

Equation at the end of step  2  :

   4    6    7
  (— • ——) • —
   7   11    8

Step  3  :

            4
 Simplify   —
            7

Equation at the end of step  3  :

   4    6    7
  (— • ——) • —
   7   11    8

Step  4  :

Final result :

   3           
  —— = 0.27273 
  11