def METHOD_NAME(self, row, col):
    packet, remainder = divmod(col, 5)
    x = (3 + 11 * packet + 2 * remainder) * WUNIT
    y = (2 + 3 * row) * HUNIT
    return x - SCREENWIDTH // 2 + WUNIT // 2, SCREENHEIGHT // 2 - y - HUNIT // 2