Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "12.65" was replaced by "(1265/100)".

Step  1  :

            253
 Simplify   ———
            20 

Equation at the end of step  1  :

   253
  (——— • c) • m
   20 

Step  2  :

Final result :

  253cm
  —————
   20