And why wouldn't they be polite?

The OP clearly does understand assembly enough to start doing project Euler type problems, which is a good way to learn basic programming in any language. They get a solution in assembler which is more than many people here would be able to do I suspect.

And they're looking to expand their knowledge by asking on stack-overflow about something they don't understand.

So why do you think they should they be met with rudeness and hostility?