The arithmetic operators are:

Operator | Operation |
---|---|

+ | Addition |

- | Subtraction |

* | Multiplication |

/ | Division |

% | Modulo |

In an arithmetic expression the terms are evaluated left to right.
The order of precedence of the operators is: *, /, %, +, -. For example,
the result of :

`4 * 2 + 16 / 8 - 1 * 2`

is 8. You can use
parentheses to indicate the order in which you want expressions to
be evaluated:
```
(4 * 2) + (16 / 8) - (1 * 2) evaluates to 8
but
4 * (( 2 + 16) / (8 - 1)) * 2 evaluates to 20.571
```