👉 Postfixation, also known as prefix notation or infix notation, is a method of writing mathematical expressions. It is used to represent and manipulate complex mathematical expressions by associating each operand with its corresponding operator before performing the operation.
In postfix notation, an expression is composed by starting from left to right, evaluating operators based on precedence (from lowest to highest). For example:
2 + 3
4 / 6
The correct order of operations is: parentheses, multiplication and division