Remember basic arithmetic from school? These work just like those.
Table 10-1. Arithmetic Operators
| Example | Name | Result |
|---|---|---|
| $a + $b | Addition | Sum of $a and $b. |
| $a - $b | Subtraction | Difference of $a and $b. |
| $a * $b | Multiplication | Product of $a and $b. |
| $a / $b | Division | Quotient of $a and $b. |
| $a % $b | Modulus | Remainder of $a divided by $b. |
The division operator ("/") returns an integer value (the result of an integer division) if the two operands are integers (or strings that get converted to integers) and the quotient is an integer. If either operand is a floating-point value, or the operation results in a non-integer value, a floating-point value is returned.
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