Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "8.4" was replaced by "(84/10)".

Step  1  :

            42
 Simplify   ——
            5 

Equation at the end of step  1  :

  42
  —— • 10
  5 

Step  2  :

Final result :

  84