Solution - Simplification or other simple results

Step  1  :

            3
 Simplify   —
            4

Equation at the end of step  1  :

  3
  — ÷ 1600
  4

Step  2  :

         3      
 Divide  —  by  1600
         4      

Final result :

    3            
  ———— = 0.00047 
  6400