How to Make a function calculator in Xcode 4.2?
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So I need to make a simple app in Xcode 4.2, I already have the layout set, there is just one thing I'm stuck on. I need to make a calculator in which someone could input several numbers which would go into an equation then when you click submit the result pops up on the page.

For example

Estimated Hourly rate: 

Estimated material cost:

Estimated Hours:

then you would click submit and on the next page you would see

Approximate cost:


Now the thing I need to know is how to use that formula in Xcode and get the next screen to display that cost. Any help is appreciated!


