What is Log Base 4 of 64?

The below is the work with steps to find what is log base 4 of 64 shows how the input values are being used in the log base 4 functions. Formula:
log_b(x) = y, if b^y = x

Input:
x = 64
b = 4

Solution:
y = log₄ 64
= log₄ 4³
= 3 log₄ 4 = 3 x 1
log₄ 64 = 3
log₄(64) = 3