Solution - Simplification or other simple results

Step  1  :

            1
 Simplify   —
            2

Equation at the end of step  1  :

    1
  ((— • 1120) • 40)2
    2

Step  2  :

 2.1     22400 = 27•52•7

(22400)² = (2⁷•5²•7)² = 2¹⁴ • 5⁴ • 7²

Final result :

  (214•54•72)