This cache is not at the published coordinates.
From the information given here you need to find the six single
digit numbers that are represented by the letters A-F, and then use
them in the formula below.
You may find some ambiguity with one or more of the letters, but
if A to F are determined in a consistent way this should provide
one solution only.
Once you have the initial information, the way to derive A-F may
not be obvious, but it is very simple. Keep at it until you have
made some progress!
A: 30U 666169 5460323
B: 31U 695457 5764215
C: 31U 499956 5637286
D: 33T 401999 4592423
E: 47P 556707 1551258
F: 30U 664613 5686105
The final cache location can be found at:
N51 18.(A-E)(D+F)C W000 38.(D+E+F)(A+B+D)(C+E)