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