Solution - Simplification or other simple results

Step  1  :

 1.1     4 = 22

(4)⁴ = (2²)⁴ = 2⁸

Equation at the end of step  1  :

  (47) • 28

Step  2  :

 2.1     4 = 22

(4)⁷ = (2²)⁷ = 2¹⁴

Equation at the end of step  2  :

  214 • 28

Step  3  :

Multiplying exponents :

 3.1    2¹⁴  multiplied by  2⁸   = 2^{(14 + 8)} = 2²²

Final result :

  222