I'm glad to help! I was worried I didn't do a very good job of explaining the concepts, but it looks like everything turned out well.
Math is definitely applicable to real estate. In finance, you'll hear the term "Time Value of Money" which refers to a certain equation. Future = Present * (1+r)^t. Essentially, the Time Value of Money equation tells you how much money you'll have if you invest your money at "r" percent for t years. If you invest $100 for 2 years at 10% (you calculate it as .10 instead of 10%), you'll have $121 dollars.
Lets say you put a hundred thousand dollars down on a house. Let's say that the house value will increase 10% every year. You want to sell the house in five years. What's the value when you sell the house in five years? $161,051.
Simple, right?
Now let's say you have two possible houses. One is in an area that averages 10% growth. The other averages 8% growth. At first, it seems smart to take the house with 10%. But let's make the problem more realistic. Let's say you intend to charge rent. The house that grows 10% is in a part of town full of college students who play landlords for the cheapest deal, so you can only charge $750 rent a month. The house that grows 8% is in a little different area, you can raise your price to $800 a month. (Though if you were charging that little rent for a full five-bedroom house, you'd have to be nuts!)
Now, which house do you invest your $100,000 in (assuming no complicating factors, assuming annual interest, and assuming you reinvest the rent you earn immediately into something that gives you the same interest rate)?
To do this, we have to rearrange the Time Value of Money equation and add a bunch of things to it. The equation considers a couple things -- payments in a year, present value, future value, time of investment, and rate. (You can even complicate it more with something called Net Present Value, but we don't need to go into that)
House #1: (10%, $750): $200,000 (Future value)
House #2: (8%, $800): $203,000 (Future value)
Obviously, you're going to want to invest in house #2. We can change that and adjust the equations to figure out if you want to keep your condo or relocate.
By the way, this stuff I just showed isn't calculus or statistics, it's a different part that deals with financial mathematics. Though finance and real estate definitely use calculus and more. That's why the posh empty-suits are making the big bucks; they took those courses and they understand the basics (or how to interpret the results) of the calculations they're using, even if they have computer applications doing the work for them. In fact, if you go to a business school worth its salt for a bachelor's degree (one that can get you a good entry-level corporate job), you're required to take statistics and some sort of class that covers calculus, even if only in passing.
You might be interested in this Wikipedia page on the Time Value of Money:
http://en.wikipedia.org/wiki/Time_value_of_money
I loved calculus in high school. 
Last winter I did a class about complex linear alegbra where they showed us how the Fourier transform worked. 
The class was taught by Roger Easton Jr, the son of the GPS developer. I also love polyhedra and fractals.
