This is a simple two stage/offset multicache. At the posted coordinates you will find a sign with a phone number. Use the digits of the phone number to find the actual geocache location.
You are solving for:
N 27° AB.CDE W 80° FG.HIJ
A = The first digit of the phone number
B = The seventh digit of the phone number
C = The eighth digit plus the tenth digit
D = The second digit divided by two
E = The ninth digit divided by three
F = The fifth digit of the phone number
G = The ninth digit of the phone number
H = The eighth digit of the phone number
I = The sixth digit of the phone number
J = The third digit minus the first
You can use certitude below to check your coordinates:
You can validate your puzzle solution with
certitude.