Solution - Simplification or other simple results

Step  1  :

Equation at the end of step  1  :

  (54) • 57

Step  2  :

Equation at the end of step  2  :

  54 • 57

Step  3  :

Multiplying exponents :

 3.1    5⁴  multiplied by  5⁷   = 5^{(4 + 7)} = 5¹¹

Final result :

  511