The cache is NOT located at the posted co-ordinates.
You must solve the Sudoku puzzle (located in the Images file).
The numbers you need to put into the actual co-ordinates formula, are located in the correctly solved puzzle going
from left to right and top to bottom.
ie. the number in the first yellow cell is the first number that you put into the following:
N 50 _ _ ._ _3, W 11_ _ _. _ _ _