Remember basic arithmetic from school? These work just like those.
Table 9-1. Arithmetic Operators
| example | name | result |
|---|---|---|
| $a + $b | Addition | Sum of $a and $b. |
| $a - $b | Subtraction | Remainder of $b subtracted from $a. |
| $a * $b | Multiplication | Product of $a and $b. |
| $a / $b | Division | Dividend of $a and $b. |
| $a % $b | Modulus | Remainder of $a divided by $b. |