Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "3." was replaced by "(3/1)".

Step  1  :

            3
 Simplify   —
            1

Equation at the end of step  1  :

  (3 • k) • g

Step  2  :

Final result :

  3kg