You can apply simple arithmetic to a Series (+, -, * and /). In this example we graph 5-minute load and its double:

```
{
"viz": "timeseries",
"requests": [
{
"q": "system.load.5{intake} * 2"
},
{
"q": "system.load.5{intake}"
}
]
}
```

You can also add, substract, multiply and divide a Series. Beware that Datadog does not enforce consistency at this point so you *can* divide apples by oranges.

```
{
"viz": "timeseries",
"requests": [
{
"q": "metric{apples} / metric{oranges}"
}
]
}
```

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