Solution - Simplification or other simple results

Step  1  :

 1.1     10 = 2•5

(10)^-4 = (2•5)^(-4) = (2)^(-4) • (5)^(-4)

Equation at the end of step  1  :

  7 • ((2)(-4)•(5)(-4))

Step  2  :

Final result :

     7              
  ——————— = 0.00070 
  (24•54)