The final cache is not at the above coordinates. The cache is a small container containing a log only there is no room for trackables. Extreme stealth is required when searching for this cache as the location is often swarming with muggles. Please re-hide the cache as found to prevent the cache from being stolen.
Stage 1: You should be standing in front of the Maroubra Beach Playground where you will be able to find the information listed below; use this information to solve the equation which will give you the final coordinates for the cache.
Count the number of pine trees within the playground. Answer = A & G & I
Count the number of light poles within the playground. Answer = B.
Count the number of poles supporting the shade sails. Take 1. Answer = C.
Count the number of shade sails. Answer = D.
Count the number of bubblers within the playground. Answer = E & F.
Count the number of bench seats with backs within the playground. Take 2. Answer = H & J.
Checksum: A+B+C+D+E+F+G+H+I+J = 46
The final cache is at S 33 AB.CDE E 151 FG.HIJ and is only a short walk away.
Congratulations to EverestHigh and MaxAdventurer on their FTF.