Solution - Simplification or other simple results

Step  1  :

            1
 Simplify   —
            4

Equation at the end of step  1  :

  1
  — ÷ 9 ÷ 16
  4

Step  2  :

         1      
 Divide  —  by  9
         4      

Equation at the end of step  2  :

   1
  —— ÷ 16
  36

Step  3  :

          1      
 Divide  ——  by  16
         36      

Final result :

   1            
  ——— = 0.00174 
  576