XSL - Using substring-after

How do I say return the value after CAD and before any space (IF there are any spaces)
I have the following two scenarios
1. <Text>01 SEAT FEE  USD 15.75</Text>
2. <Text>01 SEAT FEE  USD 15.75   914336</Text>

This is what I'm currently using to resolve example 2.
<xsl:value-of select="translate(format-number(
              substring-before (substring-after(normalize-space($Line[contains(Text, 'SEAT FEE')][position() = $pos]), 'CAD ' ), ' '), $MONEY),'.','')"/>


But if the input is like example 1 it fails and returns null bc substring-before fails. How can I rewrite the below so that it can handle both cases?
badtz7229Asked:
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Geert BormansInformation ArchitectCommented:
The obvious would be to concat a space at the end before substringing
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Geert BormansInformation ArchitectCommented:
<xsl:value-of select="translate(format-number( 
              substring-before (substring-after(concat(normalize-space($Line[contains(Text, 'SEAT FEE')][position() = $pos]), ' '), 'CAD ' ), ' '), $MONEY),'.','')"/>

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badtz7229Author Commented:
thank u
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Geert BormansInformation ArchitectCommented:
welcome
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