What is Log Base 7 of 343?

The below is the work with steps to find what is log base 7 of 343 shows how the input values are being used in the log base 7 functions. Formula:
log_b(x) = y, if b^y = x

Input:
x = 343
b = 7

Solution:
y = log₇ 343
= log₇ 7³
= 3 log₇ 7 = 3 x 1
log₇ 343 = 3
log₇(343) = 3