Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "0.3" was replaced by "(3/10)".

Step  1  :

             3
 Simplify   ——
            10

Equation at the end of step  1  :

  23
  ——
  10

Step  2  :

                  3
 Divide  12  by  ——
                 10

Final result :

  40