Solution - Simplification or other simple results

Step  1  :

 1.1     10 = 2•5

(10)³ = (2•5)³ = 2³ • 5³

Equation at the end of step  1  :

  (7 • (23•53))2

Step  2  :

Equation at the end of step  2  :

  (7•23•53)2

Step  3  :

Final result :

  (72•26•56)