For an exercism exercise I wanted to do multiplication with the pipe operator, and simply using `*`

does not work, neither does `(*)`

.

Now, it turns out the arithmetic operations are functions part of the `Kernel`

module, and you can also call them as an actual function with `Kernel.*(2, 2)`

, which is equal to writing `2 * 2`

.

This enables you do do arithmetic as part of the pipe operation, see:

```
def monthly_rate(hourly_rate, discount) do
hourly_rate
|> daily_rate
|> apply_discount(discount)
|> Kernel.*(22)
|> ceil()
end
```