span> <span class="special">&lt;&lt;</span> <span class="identifier">N01</span><span class="special">.</span><span class="identifier">scale</span><span class="special">()</span>
  <span class="special">&lt;&lt;</span> <span class="string">", has "</span> <span class="special">&lt;&lt;</span> <span class="string">"fraction &gt; "</span> <span class="special">&lt;&lt;</span> <span class="identifier">z</span>
  <span class="special">&lt;&lt;</span> <span class="string">", p = "</span>  <span class="special">&l