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 | 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. |