Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "0.15" was replaced by "(15/100)".

Step  1  :

             3
 Simplify   ——
            20

Equation at the end of step  1  :

  53
  ——
  20

Step  2  :

                  3
 Divide  45  by  ——
                 20

Final result :

  300