Solution - Simplification or other simple results

Step  1  :

            1
 Simplify   —
            2

Equation at the end of step  1  :

        7         1
  0 -  (— • (0 -  —))
        8         2

Step  2  :

            7
 Simplify   —
            8

Equation at the end of step  2  :

        7   -1
  0 -  (— • ——)
        8   2 

Step  3  :

Final result :

   7           
  —— = 0.43750 
  16