Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "4.2" was replaced by "(42/10)".

Step  1  :

            21
 Simplify   ——
            5 

Equation at the end of step  1  :

  21
  —— • 9
  5 

Step  2  :

Final result :

  189            
  ——— = 37.80000 
   5