Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "0.84" was replaced by "(84/100)".

Step  1  :

            21
 Simplify   ——
            25

Equation at the end of step  1  :

      21
  1 • ——
      25

Step  2  :

Final result :

  21           
  —— = 0.84000 
  25