Add Only Addends Mystery Cache

The cache is not at the posted coordinates. The posted coordinates are for parking. Parking is also available by the paved path off of Lakewood. Stealth may be necessary during the nearby community pool's open season. BYOP.

The cache location is at N 39 47.A9B W 075 30.0C8.
A,B, and C can be determined from the equations listed below.

9 + 7+ 5 + 3 + 1 = A
Peanut Butter + Grape Jelly + Sliced Bread = B
1 + 22 + 333 + 22 + 1 = C

 

You can check your answers for this puzzle on GeoChecker.com.