The rewritten expression is 6⁴
Using the rule of logarithm ;

The expression given is ; 
The exponent of the numerator = 5 
The exponent of the denominator = 1 
Subtract the exponents since they have the same base 
exponent = 5 - 1 = 4 
6⁵/6 = 

Hence , the expression is 6⁴