The correct coordinates to this cache can only be found if you solve the three-stage challenge below. Have fun with the number games!
Stage 1:
Classic sudoku to get you started:
Stage 2:
Not quite sudoku, but close. In this puzzle all rows and columns must contain each digit 1-9, once, just like plain sudoku. In the boxes, the numbers can be used to calculate the result that is provided in the upper left corner of each box. This text also indicate what type of math you should be using, for instance + simply means you add all the numbers in the box to get the required sum.
Stage 3:
Using the solutions from both previous stages, you can now find the 9 digits you need to complete the coordinates to the cache location,
N 59 xx.xxx, E10 4x.xxx
You can validate your puzzle solution with certitude.