title: Calculating in XSLT
body: <p>I have an .xsl which works perfectly, but when I add this line to it, it just doesn't display anything:</p>
  <pre><code>&lt;xsl:variable name=&quot;K1&quot;&gt;&lt;xsl:value-of select=&quot;600 - (108 * 300 / 150)&quot;/&gt;&lt;/xsl:variable&gt;
  </code></pre>
  <p>I suppose this is more likely a syntax error but I can't find it. Did I have something particular to do to calculate in XSLT?</p>