Some things in life are comical and created by Crazy People. The cache is not at the listed coords. The container is a double sized micro pot.
Consider:
AB = sm
CD = hs
EF = ps
GH = mb
Cache can be found at:
N51 (F-E) (B-A). (D-C) (B-C) A E000 (G/H) ((B-A)+(F/G)). (D-(F/G)) (F-C) (G-D)
Answers can be checked at:
Chmmyr: lbh ner ybbxvat sbe gur punenpgrevfgvpf bs gur cvpgher.
TM: Vs tbvat hc uvyy i funcrq gerr ba gur yrsg. Fvk sbbg hc oruvaq yrsg gehax. Gurer vf na navzny genpx gb yrsg bs gerr. TCF pbirentr ebcrl.