Solution - Simplification or other simple results

Step  1  :

            125
 Simplify   ———
             8 

Equation at the end of step  1  :

  125
  ———)2) ÷ 3
   8 

Step  2  :

 2.1   Negative number raised to an even power is positive 

For example let's look at (-7)⁶ , where (-7) , a negative number, is raised to 6 , an even exponent :

(-7)⁶ can be written as (-7)•(-7)•(-7)•(-7)•(-7)•(-7)

Now, using the rule that says minus times minus is plus, (-7)⁶ can be written as (49)•(49)•(49) which in turn can be written as (7)•(7)•(7)•(7)•(7)•(7) or 7⁶ which is positive.

We proved that (-7)⁶ is equal to (7)⁶ which is a positive number

Using the same arguments as above, replacing (-7) by any negative number, and replacing the exponent 6 by any even exponent, we proved which had to be proved

 2.2     125 = 5³ (-125)² = (5³)² = 5⁶  2.3     8 = 2³ (8)² = (2³)² = 2⁶

Equation at the end of step  2  :

  56
  —— ÷ 3
  26

Step  3  :

         56      
 Divide  ——  by  3
         26      

Final result :

   56            
  ——— = 81.38021 
  192