What do I need to write after the return so that this function will count the multiples of a given factor? 

```
def count_multiples(factor, maximum):

    return #number of multiples of 'factor' up to 'maximum'

count_multiples(3, 20) #for example

```

The function takes two integers as parameter:

* factor: which is the number I should calculate the multiples of.
* maximum: this is the maximum value that a multiple can have in order to be counted.

The function needs to return an integer value, which is the total number of multiples of factor greater than 0 and less than or equal to maximum.

In this case, the outcome needs to be: 6, because the numbers 3, 6, 9, 12, 15 and 18 are the multiples of 3 within the range 0 and 20.

Thank you.