The Division (/) section example uses the commented variable "result" without it being defined.  I am counting 4 numbers, (5.6667, 5, 2, 17), that are called result. The correct result can be implied but its poor documentation. So, either change:
>>> 17 // 3   # floor division discards the fractional part
to
>>> result = 17 // 3   # floor division discards the fractional part

or change:
>>> 5 * 3 + 2   # result * divisor + remainder
to
>>> 5 * 3 + 2  # floor * divisor + remainder

I suggest the latter as it explains the formula for floor.