Solution - Simplification or other simple results

Step  1  :

 1.1     4 = 22

(4)⁴ = (2²)⁴ = 2⁸

Equation at the end of step  1  :

  (45) • 28

Step  2  :

 2.1     4 = 22

(4)⁵ = (2²)⁵ = 2¹⁰

Equation at the end of step  2  :

  210 • 28

Step  3  :

Multiplying exponents :

 3.1    2¹⁰  multiplied by  2⁸   = 2^{(10 + 8)} = 2¹⁸

Final result :

  218