Solution - Simplification or other simple results

Step  1  :

            4
 Simplify   —
            9

Equation at the end of step  1  :

  4
  — ÷ 7 ÷ 12
  9

Step  2  :

         4      
 Divide  —  by  7
         9      

Equation at the end of step  2  :

   4
  —— ÷ 12
  63

Step  3  :

          4      
 Divide  ——  by  12
         63      

Final result :

   1            
  ——— = 0.00529 
  189