The cache is not at the posted coordinates but it is only a short walk from here to the cache.
There don't seem to be enough multi's around here so here is another. You are looking for some numbers XXX ABC DEF. Once you have them you can do a little math.
N 40 57.ABC W 111 54.DEF Subtract 456 from ABC and add 831 to DEF.
You can check your work at GeoChecker.com