Solution - Simplification or other simple results

Step  1  :

            4
 Simplify   —
            5

Equation at the end of step  1  :

  4
  — ÷ 3 ÷ 4
  5

Step  2  :

         4      
 Divide  —  by  3
         5      

Equation at the end of step  2  :

   4
  —— ÷ 4
  15

Step  3  :

          4      
 Divide  ——  by  4
         15      

Final result :

   1           
  —— = 0.06667 
  15