Quick multi cache here in Laguna Hills at El Conejo Park. Please park carefully due to all the street regulations. The Final container is a short walk/drive away. It is a small container, but not big enough for a pen, so please bring your own pen. Also, at the final use stealth if needed.
The posted coordinates will take you to a beautiful little free library. On the front of the library there is a plaque with a 5 digit charter number in the ABCDE Format. Use that number and due the following calculations. You may use the provided certitiude to check if the coordinates you have solved for are correct. If you are having any trobule with WP1 or the final cache please message me and I will help you.
The Cache Can Be Found At: N 33 35.ABC W 117 41.DEF
A= B MINUS 1
B= D or 4th digit of charter number
C= E or the last digit of the charter number
D= C MINUS B
E= A MINUS 8
F= C DIVIDED by B PLUS 2
Checksum for last 3 digits of the NORTH Coordinates is 11
Checksum for the last 3 digits of the WEST Coordinates is 12

You can validate your puzzle solution with
certitude.
At the final please BYOP and use stealth if needed.
Happy Caching!