Once at the posted coordinates you will see a sign.
At the top of the sign there are is a two digit number after C.T., let the 2 digit number be AB.
At the bottom of the sign there is a 10 digit phone number, let the 10 digit number be CDE-FGH-JKLM.
To determine the final coordinates do a projection from posted using the following:
meters - AMB
angle - BHL
To ensure you have the correct answers for the above the sum of the angle and meters is 374.
The last digit in the north coordinates is 6 and the last digit in the west coordinates is 1.