def _dms2dd(degrees, minutes, seconds):
    """Helper method for converting degrees, minutes, seconds to decimal.

    Args:
        degrees (int):
            Lat/Lon degrees.
        minutes (int):
            Lat/Lon minutes.
        seconds (int):
            Lat/Lon seconds.

    Returns:
        float: Lat/Lon in decimal degrees
    """
    decimal = degrees + float(minutes) / 60.0 + float(seconds) / 3600.0
    return decimal