Welcome to a very easy cache. The first stage is at:
N∆A 27.A73 W3Z2 ZA.Z2Z
The different ciphers are below:
∆ = 3
A = 8
2 = 0
7 = 7
Z = 0
3 = 1
_________________________
∆ = 4
A = 0
2 = 0
7 = 1
Z = 0
3 = 1
_________________________
∆ = 3
A = 9
2 = 5
7 = 8
Z = 0
3 = 1
_________________________
∆ = 3
A = 5
2 = 4
7 = 6
Z = 0
3 = 3
_________________________
∆ = 3
A = 7
2 = 3
7 = 9
Z = 4
3 = 2
_________________________
∆ = 4
A = 1
2 = 4
7 = 3
Z = 1
3 = 2
_________________________
∆ = 4
A = 0
2 = 3
7 = 2
Z = 1
3 = 2
_________________________
Please note that the cache is a difficulty of 2.5 or so. The puzzle is the 3.5.