calculator

[mr bean]

i want the calculator which i can access immediate with a tap (while i m on other application such as moneyce n needed to calculate some numbers fast)
calculator which display the whole calculation(like those scientific calculator ), the default calculator in my ipaq was way too simple n not able to perform a more complicated calculation (like i want to perform a longer calculation in one shot n able to see the whole equation or calculation so i can check whether i key in anything wrong)

any likewise software out there?tq[;)]

[AnswerDude]

Here's a list of free calculators,
http://www.pocketpcfreeware.com/en/index.php?sortby=rating&cat=32
after you find the one you like, you can map it to a button, so you should be able to call it up when you are using other application.