I was explaining RPN to a friend. He was somewhat unconvinced and said: I would like to have a system that works like I do it on paper. That's how my calculator works. OK, I said, let's look at how you do it on paper. You write down the first number, right? Right. Then you write the second number, right? Right. Then you apply the operation, right? Right. And then you have the answer, right? Right. That's also exactly how RPN works, don't you see? He thought about it for a moment. You are right! Now I'm convinced.
RPN


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