From Xojo Documentation
Used to overload the Integer Division operator, providing custom functionality.
Create an Operator_IntegerDivide function in a class to specify the functionality of the Integer_Division operator for that class.
In the function, the Self instance is the left operand and the other operand is passed as a parameter. Whenever you use the Integer_Division operator in your code to operate on two instances of the class and the Self instance is on the left, your Operator_IntegerDivide function will be called.
Var a, b As Integer
a = Self.x + Self.y
b = rhs.x + rhs.y
Return a \ b