Solution - Simplification or other simple results

Step  1  :

            3
 Simplify   —
            4

Equation at the end of step  1  :

  3
  — ÷ 21 ÷ 10
  4

Step  2  :

         3      
 Divide  —  by  21
         4      

Equation at the end of step  2  :

   1
  —— ÷ 10
  28

Step  3  :

          1      
 Divide  ——  by  10
         28      

Final result :

   1            
  ——— = 0.00357 
  280