*The reference coordinates are not to be used as the cache is NOT hidden there*
The virtual N and W coordinates have the same last 5 digits. Similarly GZ has matching N and W coordinates for the final 5 digits. In addition, only 2 different digits are used throughout for both the virtual and final stage. There are not many valid options available but should you need more help then the hint should be used. Extra credit if you don't use the hint.