Solution - Simplification or other simple results

Step  1  :

            4
 Simplify   —
            5

Equation at the end of step  1  :

        1         4
  0 -  (— • (0 -  —))
        8         5

Step  2  :

            1
 Simplify   —
            8

Equation at the end of step  2  :

        1   -4
  0 -  (— • ——)
        8   5 

Step  3  :

Final result :

   1           
  —— = 0.10000 
  10