Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "620." was replaced by "(620/1)".

Step  1  :

            620
 Simplify   ———
             1 

Equation at the end of step  1  :

  (620 • g) • r

Step  2  :

Final result :

  620gr