new_contents: SIG = ['M', 'CM', 'D', 'CD', 'C', 'XC', 'L', 'XL', 'X', 'IX', 'V', 'IV', 'I']
  VALUE = [1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1]
  
  
  def checkio(number):
      result = ''
      idx = 0
      while number > 0:
          if VALUE[idx] > number:
              idx += 1
              continue
          else:
              result += SIG[idx]
              number -= VALUE[idx]
      return result
  
  
  if __name__ == "__main__":
      assert checkio(6) == 'VI', "Case 1"
      assert checkio(76) == 'LXXVI', "Case 2"
subject: Implement the Roman Numerals.