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From: David Arnold <darnold@northcoast.com>
Newsgroups: gmane.comp.tex.context
Subject: Arithmetic Macros
Date: Sat, 26 Nov 2005 13:22:29 -0800
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All,

Does anyone have any macros for typesetting common arithmetic  
explanations, such as +, -, x, and /?

Like:

    123
+456
_____
    579

Or:

          21
     ________
25) 527
        50
        __
          27
          25
         ___
            2


David