Solution - Simplification or other simple results

Step  1  :

            7
 Simplify   —
            8

Equation at the end of step  1  :

  7
  — ÷ 21 ÷ 3
  8

Step  2  :

         7      
 Divide  —  by  21
         8      

Equation at the end of step  2  :

   1
  —— ÷ 3
  24

Step  3  :

          1      
 Divide  ——  by  3
         24      

Final result :

   1           
  —— = 0.01389 
  72