def indent(input_string: str, indentation: int) ->str:
    """
    Indent the given string.

        :param input_string: The string to indent. If the string spans several lines, every line will be indented
                             (assumed separator \\\\n).
        :param indentation: Number of spaces used to indent every line of the input string.

    """
    return ' ' * indentation + input_string.replace('\n', '\n' + ' ' *
        indentation)
