Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "^-2" was replaced by "^(-2)".

Step  1  :

Equation at the end of step  1  :

Step  2  :

                 1
 Divide  4  by  ——
                72

Final result :

  (22•72)