def coord_from_hex_digits(digit_1, digit_2):
    """
    Returns an integer representing the hexadecimal coordinate with the two given hexadecimal digits.

    >> hex(coord_from_hex_digits(1, 3))
    '0x13'
    >> hex(coord_from_hex_digits(1, 10))
    '0x1A'

    :param digit_1: first digit, int
    :param digit_2: second digit, int
    :return: hexadecimal coordinate, int
    """
    return digit_1 * 16 + digit_2
