input: Write a python function to find all numbers in the list that are divisible by 8.
  assert find_divisible_by_8([8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96, 100])==[8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96]
  assert find_divisible_by_8([5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65])==[40]
  assert find_divisible_by_8([1, 2, 3, 4, 5, 6, 7, 8])==[8]
output: def find_divisible_by_8(lst):
      return [num for num in lst if num % 8 == 0]