Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "0.9" was replaced by "(9/10)".

Step  1  :

             9
 Simplify   ——
            10

Equation at the end of step  1  :

   9
  —— • 7
  10

Step  2  :

Final result :

  63           
  —— = 6.30000 
  10