code: def get_remembered_position(self):
          
          if not self._able_to_format:
              return self._original_position
          accrued_input_index = 0
          current_output_index = 0
          while (accrued_input_index < self._position_to_remember and
                 current_output_index < len(self._current_output)):
              if (self._accrued_input_without_formatting[accrued_input_index] ==
                  self._current_output[current_output_index]):
                  accrued_input_index += 1
              current_output_index += 1
          return current_output_index
docs: Returns the current position in the partially formatted phone
          number of the character which was previously passed in as the
          parameter of input_digit(remember_position=True).