ZeroDivisionError

Raised when attempting to divide an integer by 0.

42 / 0 #=> ZeroDivisionError: divided by 0

Note that only division by an exact 0 will raise the exception:

42 / 0.0 #=> Float::INFINITY
42 / -0.0 #=> -Float::INFINITY
0 / 0.0 #=> NaN