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Comment by snitzr | Hacker News Reader

RPN (Reverse Polish Notation) gets things done on a calculator. This article shows one reason why it's not just for finance.

You beat me to it. Enter one of

    6 [enter] 2 [enter] 1 [enter] 2 + * /

    6 [enter] 2 / 1 [enter] 2 + *

depending on how you prioritize the implicit *, and never have to wonder how your calculator might interpret the input.

> depending on how you prioritize the implicit *,

I believe this is the crux if the issue, RPN notwithstanding.