Python has arbitrary-precision `int` (no overflow) and `float` (IEEE-754 double). `/` always returns a float, `//` is floor division, and `%` is modulo.
python 7 / 2 # 3.5 7 // 2 # 3 7 % 2 # 1 2 ** 10 # 1024
Because floats are binary approximations, `0.1 + 0.2 != 0.3`; use `round()` or the `decimal` module when exactness matters, such as summing token amounts.
Underscores can group digits for readability: `1_000_000`.