This cache can help with several challenges. Rhyme Time Challenge, California Multi Cache Challenge, and maybe more.
This is a simple 2 stage multi. GZ should take you to a street light with a 4 digit number on it.
Add the 4 digits together then square that sum to get Y. Subrtact Y from 531 to get the North coords (N38 01.N). Add Y to 561 to get the West coords (W122 16.W)
Final coords check sum for ALL digits: 54