YOU REALLY SHOULD READ THIS:
Before you go out to find this geocache, you’ll need to print the picture "Directions 20140401". It's attached to this description, down below, just above the logs area. It must be printed at 100%, so the border is 260mm deep x 100mm wide. Of course, you can view it electronically in the field, but that won’t be much help as you have to use the template you’ll find in the last three waypoints to see the correct information. Very mysterious, huh? 
You’ll also need a calculator at waypoint 5 ... a real one! It must be able to handle a 10 digit number 
. The number you’ll work with is actually 15 digits, but you can round it to 10 and still be very accurate.
I thought the iPhone calculator didn't have a hope, but then I discovered it changes to a clever calculator when you rotate the phone 90° 
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A spreadsheet programme will do it easily though.
INSTRUCTIONS:
At the posted co-ordinates, you’ll find a concrete disc with two words stamped into it. Convert the letters to numbers (A=1, B=2 etc). Add up the numbers for each word. If you found DOG TAGS, you’d have 26 and 47. When you have the correct numbers, multiply the first by 50678.426 for waypoint 2 south. Multiply the second number by 228430.956 for waypoint 2 east. Now, ditch the decimals in the result and you'll have numbers for waypoint 2. Off you go 
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So, you’re standing at waypoint 2. See the dead car? Good. Note the dead postie bike beside it. Now the car, being the natural enemy of the postie bike, I wonder just what happened here. Perhaps it was a duel to the death with the victor (certainly the car) sustaining mortal wounds. There are pieces of postie bike scattered about. Both wheels, a fuel tank, a battery even a second set of forks. This would suggest a second postie bike . Did the bikes ambush the car? What would CSI make of this scene? But I digress … the bike’s compliance plate has an approval number. (Two 4 digit numbers in fact). You know the story 
. Multiply the first one by 1558.5194, the second by 2779.6982. Ditch the decimals again and waypoint 3 is yours for the taking.
At waypoint 3, it’s print-out time. There’s a template in the container. You lay it over the print-out you brought along and all is revealed for waypoint 4.
So, are you enjoying the walk? Have you seen any kangaroos? Have you looked for any of the other geocaches in here? I really like this area, as you might have guessed. Again, there is a template in waypoint 4, but it’s not as obvious this time 
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Finally, here you are at the fifth and final waypoint and it’s not far to the cache. You brought a real calculator, didn’t you? A little mathematical athleticism will reveal the numbers you need to find the final location.
Ground zero isn’t the most salubrious place. No view, just a few trees in some scrappy bush with lots of sticks to trip over. Well, there’s a nice big ammo box with some swaps and a logbook to sign, so all is not lost.
Thank you for playing along. I hope you’ve enjoyed this little adventure.