Speak the digit at a time for each number for element and descendants.

        :param element: The element.
        :type element: hatemile.util.html.htmldomelement.HTMLDOMElement

def _speak_as_digits_inherit(self, element):
        """
        Speak the digit at a time for each number for element and descendants.

        :param element: The element.
        :type element: hatemile.util.html.htmldomelement.HTMLDOMElement
        """

        self._reverse_speak_as(element, 'digits')

        self._isolate_text_node(element)

        self._visit(element, self._speak_as_digits)