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): ".78" was replaced by "(78/100)".

Step  1  :

            39
 Simplify   ——
            50

Equation at the end of step  1  :

           39
  (10-3) • ——
           50

Step  2  :

 2.1     10 = 2•5

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

Equation at the end of step  2  :

                      39
  ((2)(-3)•(5)(-3)) • ——
                      50

Step  3  :

Multiplying exponents :

 3.1    2³  multiplied by  2¹   = 2^{(3 + 1)} = 2⁴

Multiplying exponents :

 3.2    5³  multiplied by  5²   = 5^{(3 + 2)} = 5⁵

Final result :

     39             
  ——————— = 0.00078 
  (24•55)