You should be able to figure that out analyzing just one...the deal you are looking to potentially buy.2 - CoCReturn tells you how much cash you recover of the total cash you spent on a deal within the first year of ownership.3 - You need to learn Geometry and Algebra first, of the calculators won't do you any good.

I assume they want something there and the party making the offer has to do some simple algebra to check what I said I am worth vs what I invested with them.

People think they can succeed without even realizing you need a proper foundation to build anything worthwhile....and that foundation has been, and always will be, Geometry and Algebra. 

It's a simple math (Geometry/logic and Algebra/execution) problem.

To do this there needs to be a greater understanding of Geometry and Algebra, and how that math applies to REI through an education of how money works.  

Algebra and Geometry books on how they relate to REI.Proper knowledge on ho to analyze marketsThe importance of learning as many different strategies as you can, and then knowledge about those strategies, how, when and where to apply them, and the math behind them.Learning what a REI Plan is, and the difference between a Plan, Financial Goals, and the steps that lead you from where you are to your financial goals.The most important knowledge, is how all of this goes together.Now I've already done all of this, and more, but these are some of the most important things that are lacking out there.

Maybe the math is too dense for some people, but if you passed high school algebra, it shouldn't be a problem.

Hell it's better than I did in Algebra. :) Best of luck to you.

I was listening to a podcast a few weeks ago and remember hearing about one of the guests talk about a book that had to do with calculus and how its a lot easier to learn upper level calculus before learning basic algebra.

(Just a cap rate.)Crazy Math Skills: I teach advanced algebra.