Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "1.8" was replaced by "(18/10)".

Step  1  :

            9
 Simplify   —
            5

Equation at the end of step  1  :

   9
  (— • k) • g
   5

Step  2  :

Final result :

  9kg
  ———
   5