Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "^-3" was replaced by "^(-3)".

Step  1  :

 1.1     256 = 28

(256)^-3 = (2⁸)^(-3) = (2)^(-24)

Equation at the end of step  1  :

Step  2  :

          1       
 Divide  ———  by  4
         224      

Multiplying exponents :

 2.1    2²⁴  multiplied by  2²   = 2^{(24 + 2)} = 2²⁶

Final result :

   1                                   
  ——— = 1.49012 • 10-8 
  226