This clock is a citizens' memorial to the memory of the Hon. Sir Francis Nicklin who was a former premier of Queensland. He was a soldier, farmer and politician, and a distinguished citizen of Palmwoods.
Go to this prominent memorial in Palmwoods at the listed coordinates and find out the following:
A = Number of years between when Sir Francis Nicklin died and when this memorial was erected
B = Year Sir Francis Nicklin entered parliament: 193_
C = Number of years that Sir Francis Nicklin was premier for minus 7
D = Year Sir Francis Nicklin became premier: 19_7
E = B + D
F = B × C
The cache can be found at: S 26 CA.BBA E 152 DE.CFD
Just a short walk from the clock once you have the new coordinates and you will be at the final cache location. Remember it is a nano and you'll have to make a stretch for it. It might also help you to know that it's magnetic. BYO pen/pencil, no room for swaps. This is a bustling street with lots of traffic and the cache location is out in the open, so be stealthy to prevent exposure to muggles.
Congratulations to Konie for FTF! 