Solution - Simplification or other simple results

Step  1  :

            11
 Simplify   ——
            51

Equation at the end of step  1  :

  12   11
  —— • ——
  52   51

Step  2  :

             3
 Simplify   ——
            13

Equation at the end of step  2  :

   3   11
  —— • ——
  13   51

Step  3  :

Final result :

   11           
  ——— = 0.04977 
  221