Your OS -> Calculator.
The way your compiler interpretes it is up to your compiler.
0x Prefix = Most used in cpp. In VBCrap "H" is the Hex tag, Etc.
A Number is a Number, Just use it the right way so it is compiled the right way, I haven't slept / Drank a bit too much wine to even bother explaining, But if you had read your book as you should have I wouldn't be there typing this.
Edit:
Re-Read your thingy.
Err.
For an App, A Number is a Number, Hex, Dec, Etc are only ways to print/show it, It will compute the same way regardless of the tag as it is saved in memory, What are you exactly trying to do ?. I just don't get it.
Read your book again, Answer question yourself.