You wll not find the cache at the given coordinates.
It is hidden at N52 51.(A+B)C(D-B) W002 06.(B+C)(C-B)(A+B+C-D)
where AB x CDB = BBBBB
There is no writing implement in the container so please bring your own.
Please replace the container exactly as found.
HAPPY HUNTING
You can check your answers for this puzzle on GeoChecker.com.