Trying to show all numbers lower than the average in another list

For school we have to make a code which shows the average of a certain list into another list but for some reason my list which should show the smaller numbers is empty, I don't know if it is possible but I tried using an extra variable which counts +1 to itself

from random import randint

kleiner = []
list = []
teller = 0
aantal = int(input("Hoeveel random getallen wilt u? "))
veelvoud = int(input("Welke veelvoud? "))

while len(list) < aantal:
    getal = randint(1, 100)
    if getal % veelvoud == 0:
        list.append(getal)
gemiddelde = sum(list) / len(list)

while len(list) < aantal:
    if list[teller] < gemiddelde:
        kleiner.append(list[teller])
        teller += 1

print(list)
print(list[::-1])
print(kleiner)

help is appreciated in advance.