Solution - Simplification or other simple results

Step  1  :

            21
 Simplify   ——
            2 

Equation at the end of step  1  :

  21
  —— ÷ 1 ÷ 3
  2 

Step  2  :

         21      
 Divide  ——  by  1
         2       

Equation at the end of step  2  :

  21
  —— ÷ 3
  2 

Step  3  :

         21      
 Divide  ——  by  3
         2       

Final result :

  7           
  — = 3.50000 
  2