Always Get Two Decimal Places

I have a part of a query that is doing this:

( SUM(BowlRuns) / SUM(BowlWickets) ) AS Average

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On the result, I do this:

round($myrow["Average"],2)

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The issue I have is sometimes the result of Average is shown as "22.3".  How can I always get 2 decimal places, so "22.3" becomes "22.30"?
PeterErhardAsked:
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Dave BaldwinFixer of ProblemsCommented:
You have to format with something like printf() that converts it to text.  Leading and trailing zeros in number have no significance so when they are converted from the binary arithmetic they don't exist.
printf("%01.2f", round($myrow["Average"],2)); 

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http://us2.php.net/manual/en/function.sprintf.php
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PeterErhardAuthor Commented:
Cheers Dave, worked perfectly!
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Dave BaldwinFixer of ProblemsCommented:
You're welcome, glad to help.
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