Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "^-88" was replaced by "^(-88)".

Step  1  :

 1.1   

Negative number raised to an odd power is negative

To show this we begin with (-7)⁵ ,a negative number raised to an odd exponent:

(-7)⁵ can be written as (-7)•(-7)•(-7)•(-7)•(-7)

Now, using the rule that says minus times minus is plus, (-7)⁵ can be written as (49)•(49)•(-7) which is a negative number. 

 We showed that (-7)⁵ is a negative number  

 Using the same arguments as above, replacing (-7) by any negative number, and replacing the exponent 5 by any odd exponent, we proved which had to be proved  

  1.2     88 = 2³•11 (-88)³ = (2³•11)³ = -2⁹ • 11³

Equation at the end of step  1  :

  8(-2^9•11^3)

Step  2  :

 2.1     8 = 23

(8)^-681472 = (2³)^(-681472) = (2)^(-2044416)

Final result :

      1                                          
  ———————— = 2.88659 • 10-615431 
  22044416