input: Write a python function to find numbers divisible by 4 in a list.
  assert find_divisible_by_4([1, 8, 10, 15, 20, 25]) == [8, 20]
  assert find_divisible_by_4([4, 16, 23, 42]) == [4, 16]
  assert find_divisible_by_4([5, 7, 9, 12, 16, 18]) == [12, 16]
output: def find_divisible_by_4(numbers):
      return [num for num in numbers if num % 4 == 0]