Solution - Simplification or other simple results

Step  1  :

             4
 Simplify   ——
            13

Equation at the end of step  1  :

   5    4
  —— • ——
  14   13

Step  2  :

             5
 Simplify   ——
            14

Equation at the end of step  2  :

   5    4
  —— • ——
  14   13

Step  3  :

Final result :

  10           
  —— = 0.10989 
  91