This is a quick, two-stage multi.
At GZ you will see a string of 10 characters in orange and black. Use only the last 7 characters to derive with the final location. From left to right each character will be A thru G. If there are letters in the characters, use their numeric value. For example, if the characters are 1,2,E,4... then, A=1, B=2, C=5, D=4, etc...
Now for the final location:
North = A C F
West = C (G/2) (Fx2)