Solution - Simplification or other simple results

Step  1  :

            3
 Simplify   —
            4

Equation at the end of step  1  :

  3   3
  — • —
  5   4

Step  2  :

            3
 Simplify   —
            5

Equation at the end of step  2  :

  3   3
  — • —
  5   4

Step  3  :

Final result :

   9           
  —— = 0.45000 
  20