<?xml version="1.0" encoding="UTF-8" standalone="yes"?> 
<root> 
... 
<Nummer> 
<Nr>89764532</Nr> 
</Nummer> 
</root> 

<?xml version="1.0" encoding="UTF-8"?> 
<xsl:stylesheet version = "2.0" 
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> 
<xsl:output method="xml" version="1.0" encoding = "UTF-8" indent="yes"/> 
<xsl:template match="/"><xsl:element name = "Nummer"><xsl:apply-templates select="/root/."/></xsl:element> 
</xsl:template> 
 
<xsl:template match="Nr"> 
<xsl:element name = "Nr"><xsl:value-of select = "/root/Nummer/Nr"/><xsl:element name = "Nr"><xsl:text> 
</xsl:text> 
<xsl:element name = "Sub"><xsl:value-of select = 'substring(/root/Nummer/Nr, Länge der Nr-2)'/></xsl:element> 
<xsl:element name = "laenge"><xsl:value-of select = 'string-length(/root/Nummer/Nr)'/><xsl:text> 
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