Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "0.642" was replaced by "(642/1000)".

Step  1  :

            321
 Simplify   ———
            500

Equation at the end of step  1  :

  321
  ——— • 10000
  500

Step  2  :

Final result :

  6420