docs: def start(st_reg_number):
      """Checks the number valiaty for the Espirito Santo state"""
  
      weights = [9, 8, 7, 6, 5, 4, 3, 2]
      number_state_registration = st_reg_number[0:len(st_reg_number) - 1]
      digit_state_registration = st_reg_number[-1]
  
      if st_reg_number[0:2] not in ['10', '11', '12']:
          return False
  
      if len(st_reg_number) != 9:
          return False
  
      sum_total = 0
  
      for i in weights:
          sum_total = sum_total + i * (int(number_state_registration[-i+1]))
  
      check_number = number_state_registration <= 10119997
  
      if sum_total % 11 == 0:
          return '0' == digit_state_registration
  
      elif sum_total % 11 == 1 and (int(number_state_registration) >= 10103105 and check_number):
          return '1' == digit_state_registration
  
      elif sum_total % 11 == 1:
          return '0' == digit_state_registration
  
      else:
          digit_check = 11 - sum_total % 11
          return digit_state_registration == str(digit_check)
  
      if number_state_registration == '11094402' and (number_state_registration == '1' or number_state_registration == '0'):
          return True