Route 66 GeoArt
It would be great to turn the geoart into smiling faces.
Although 66 appears in the posted coordinates, please do not go to them.
These numbers will give you the correct coordinates to find the cache.
588 520 404 575 909 291
684 909 348 312 505 648
776 690 464 580 476 444
805 606 928 805 222 204
400 210 618 630 928 460
605 888 234 330 808 202
900 232 318 468 456 388
440 600 216 385 144 276
S 41° 03.???' E 175° 29.???'
Hints 02/12/2022:
Like those caches that are well-hidden and take ages to find, the cache page has been updated to make something a bit easier to find.
Maths (one of the four).
Hints 26/11/2023:
Division by single digit (a different one for each number);
Convert each answer to 'standard data-encoding format for electronic communication between computers' to obtain the message and the 6 digits for the final coordiantes.