Complete the function which takes two arguments and returns all numbers which are divisible by the given divisor. First argument is an array of `numbers` and the second is the `divisor`.
## Example
```python
divisible_by([1, 2, 3, 4, 5, 6], 2) == [2, 4, 6]
```
def divisible_by(numbers, divisor):
    div_by = []
    for num in numbers:
        if num % divisor == 0:
            div_by.append(num)
    return div_by
def divisible_by(numbers, divisor):
    div_by = []
    for num in numbers:
        if num % divisor == 0:
            div_by.append(num)
    return div_by