Cache is NOT at Posted Coordinates.
A Calculator would be helpful to complete this puzzle.
As many of us who are technically-minded, or maybe just geek-ish, we have played with Electronic and computerized things for many years.
If you've ever spelled-out things on the calculator, then that may be a help to solve this puzzle.
Maybe time to grab that non-PDA Calculator and warm it up again for this little challenge.
Your Puzzle:
A = Fourteen-Million, Two-Hundred-Fifteen-Thousand, Four-Hundred-Sixty-Nine.
B = The first Digit of the Route Number in the East-West Michigan Highway that runs nearby.
C = A multiplied by B
D = First Two Digits of C
E = Last Three Digits of C
F = North Latitude Coords minus D
G = West Longitude Coords plus E
The Puzzle: n42 38.F -- w083 G
I've always enjoyed things like this.... I hope you do too.
Good Luck & Enjoy the Hunt! :)