input: Write a function to extract all phone numbers that start with '08' from a given list. The function should return a new list containing only the phone numbers that match this criterion. If the input list is empty, the function should return an empty list.
  assert extract_phone_numbers_starting_with_08(['0834567', '0945678', '07123456', '08901234', '07890123'])==['0834567', '08901234']
  assert extract_phone_numbers_starting_with_08([])==[]
output: def extract_phone_numbers_starting_with_08(phone_numbers):
      return [number for number in phone_numbers if number.startswith('08')]