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)".

(2): ".2" was replaced by "(2/10)".

Step  1  :

            1
 Simplify   —
            5

Equation at the end of step  1  :

          1
  (9-2) • —
          5

Step  2  :

 2.1     9 = 32

(9)^-2 = (3²)^(-2) = (3)^(-4)

Equation at the end of step  2  :

            1
  (3)(-4) • —
            5

Step  3  :

Final result :

   1            
  ——— = 0.00247 
  405