[xsl] How to access calculation done in loop?

[Niloy Chakrabarty <tukaic at usa dot net>]

Hi, 

I am trying to calculate the total price of all the items purchased. Take for
example the code below:

<xsl:for-each select="//box/item">
  <xsl:value-of select="./price"/>
  <xsl:value-of select="./qty"/>
</xsl:for-each>

I want to print the total amount outside the for-each loop by multiplying
price and qty for each item. Is there a way to achieve this?

TIA 

Niloy

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