input: 
  def get_largest_three_numbers(numbers: List[int]) -> List[int]:
      """ Find the largest three numbers in a given list of integers.
      >>> get_largest_three_numbers([1, 6, 3, 8, 7, 4])
      [6, 7, 8]
      >>> get_largest_three_numbers([9, 2, 5, 10, 3, 7])
      [7, 9, 10]
      """
  
output:     numbers.sort()
      return numbers[-3:]