input: def find_largest_number(numbers: List[int]) -> int:
      """ Find and return the largest number in the given list.
      >>> find_largest_number([1000, 506, 299, 620, 35])
      1000
      """
  
      max_num = 0
  
      for num in numbers:
          if num > max_num:
              max_num = num
  
      return max_num
output:     max_num = numbers[0]
  
      for num in numbers:
          if num > max_num:
              max_num = num
  
      return max_num