Solution - Simplification or other simple results

Step  1  :

            3
 Simplify   —
            1

Equation at the end of step  1  :

  15
  —— • 3
  8 

Step  2  :

            15
 Simplify   ——
            8 

Equation at the end of step  2  :

  15
  —— • 3
  8 

Step  3  :

Final result :

  45           
  —— = 5.62500 
  8