input: 
  def find_largest_three(numbers: List[int]) -> List[int]:
      """Find and return 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([10, 2, 4, -1, 0, 9])
      [4, 9, 10]
      """
  
output:     numbers.sort(reverse=True)
      return numbers[:3]