Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "0.8" was replaced by "(8/10)".

Step  1  :

            4
 Simplify   —
            5

Equation at the end of step  1  :

   4
  (— • k) • m
   5

Step  2  :

Final result :

  4km
  ———
   5