At the coordinates, while facing east, you should be able to see a
date. You will need to do some math to find the actual cache. Take
the last two digits of the date and add them together. Multiply
that number by the first digit and then multiply that number by the
second digit. Make note of your total. Next, add all four digits of
the date together to make a two-digit number. Subtract this number
to the previous total, and add the grand total to the original
north coordinate.
Now, to find the west coordinate: Take the first two digits of
the date as a two-digit number. Subtract from that the third digit
and then subtract the fourth digit. Add this number to the west
coordinate. You should end up at a small park not very far
away.
The final cache, a small pill bottle, is hidden there. It's not
a bad idea to do this one at night because it is in the heart of
town, so it is lighted and you won't have to deal with muggles that
way. However, follow the park rules. It is closed from midnight to
6 a.m.
This is a pretty quick multi-stage, so those who are turned off
by caches that take a long time don't have to worry.