THIS CACHE IS NOT AT THE POSTED COORDINATES!!!
Wellzez4 shot onto the geocaching scene in 2010. They have been busy at it ever since -- chasing FTF's and finding caches all over the place. They have placed some great hides as well during this time. During the 2 1/2 years they have been caching they have also helped promote the activity to others through some really cool videos. They are always willing to tag along and help cachers in their search. If you run into them on the trails you will surely run into their adorable TB Stuart who will surely meet you with a lick or two. I would like to congratulate them on their 1000th find (Highlander) and thank them for the great caching adventures we have shared.
Congrats on #1000!
To find this cache you must solve the following problem:
Wellzez City is half as old as Time.
One billion years ago the city's age
Was just two-fifths of what Time's age will be
A billion years from now. Can you compute
How old Wellzez City is today?
1 billion: N 41° 54.284 W 090° 10.954
2 billion: N 41° 54.368 W 090° 10.898
3 billion: N 41° 54.262 W 090° 10.930
4 billion: N 41° 54.273 W 090° 10.907
5 billion: N 41° 54.360 W 090° 10.925
6 billion: N 41° 54.334 W 090° 10.889
7 billion: N 41° 54.352 W 090° 10.865
8 billion: N 41° 54.330 W 090° 10.930
9 billion: N 41° 54.370 W 090° 10.829
10 billion: N 41° 54.376 W 090° 10.793

This is the official mascot of Wellzez City.
If you see him, you are very close to Wellzez City!!
There is no geochecker on this cache. You must either solve the problem or try all above possibilities. 
Good luck!!!
Thanks to 24hawki for her help putting this cache together and for donating an ammo can, stencil, and swag for the cache, and guidance in the cache page design.
CONGRATULATIONS to Wellzez4 on their FTF and their great accomplishment!!!