I use this site and it's a complete lifesaver!
https://www.learnthat.org/pages/view/roots.html
So if you have 32 vehicles and 20 pickup trucks then you have 12 vans.
so your ratio would be 20 to 12 then reduce you should get 5 to 3
Dynamic iris recognition is a program device. scans the iris and all the information on that person will be right in front of you with one scan of the iris.