Divide the left operand by the right operand and assign the quotient to the left operand.
This is functionally equivalent to the expression:
anOperand1 = anOperand1 / anOperand2;
Although this is classified as an assignment operator, it is really a compound of an assignment and a multiplicative operator.
The associativity is from right to left.
Refer to the operator precedence topic for details of execution order.
The new value of anOperand1 is returned as a result of the expression.
The operand to the left of the operator must be an LValue. That is, it should be able to take an assignment and store the value.