OJO DE LA CERRADURA

Solo el buscador del Círculo pasará

Only the Circle seeker will pass

305035 -> 2
128530 -> 3
230565 -> 2
980313 -> 4
125861 -> 3
981267 -> 4

127782 -> ?
938021 -> ?
038920 -> ?
123057 -> ?
506306 -> ?
867503 -> ?