Exponentiation example not clear

The following documentation comment has been logged on the website:

Page: https://www.postgresql.org/docs/13/functions-math.html
Description:

Quoting the docs:

Exponentiation (unlike typical mathematical practice, multiple uses of ^
will associate left to right)
2 ^ 3 → 8
2 ^ 3 ^ 3 → 512

You could probably add 

2 ^ (3 ^ 3) → 134217728 # 2 ^27