Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "^-13" was replaced by "^(-13)".

(2): "4.2" was replaced by "(42/10)".

Step  1  :

 1.1     10 = 2•5

(10)^-13 = (2•5)^(-13) = (2)^(-13) • (5)^(-13)

Equation at the end of step  1  :

  42
  —— • ((2)(-13)•(5)(-13))
  10

Step  2  :

            21
 Simplify   ——
            5 

Equation at the end of step  2  :

  21
  —— • ((2)(-13)•(5)(-13))
  5 

Step  3  :

Multiplying exponents :

 3.1    5¹  multiplied by  5¹³   = 5^{(1 + 13)} = 5¹⁴

Final result :

      21                                      
  ————————— = 4.20000 • 10-13 
  (514•213)