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)".

(2): "3.90625" was replaced by "(390625/100000)".

Step  1  :

 1.1     10 = 2•5

(10)^-3 = (2•5)^(-3) = (2)^(-3) • (5)^(-3)

Equation at the end of step  1  :

  390625
  —————— • ((2)(-3)•(5)(-3))
  100000

Step  2  :

            125
 Simplify   ———
            32 

Equation at the end of step  2  :

  125
  ——— • ((2)(-3)•(5)(-3))
  32 

Step  3  :

Multiplying exponents :

 3.1    2⁵  multiplied by  2³   = 2^{(5 + 3)} = 2⁸

Canceling Out :

 3.2      Canceling out  5³ as it appears on both sides of the fraction line

Final result :

   1            
  ——— = 0.00391 
  256