Im trying to find the number of multiples in a list while divided by a number provided from the user. For example the list [12, 5] and the user input is 3 so the output would be 5, because int(12/3) + int(5/3) = 5.

```
def multiple(first_list, dividing_num):
     quotient = []
     for i in list(first_list):
      quotient = i // dividing_num
      i += quotient
     return i
print(multiple([9, 18, 2, 20, 21], 4))
#the output should be 16

```