 &lt;pillar_num[1]&gt;</span></span>
<span id="cb5-21"><a href="#cb5-21" aria-hidden="true" tabindex="-1"></a><span class="co">#&gt; [1] -2</span></span></code></pre></div>
</div>
<div id="mathematics" class="section level3">
<h3>Mathematics</h3>
<p>Similarly, for mathematical operations, the formatting is
inherited.</p>
<div class="sourceCode" id="cb6"><pre class="sourceCode r"><code class="sourceCode r"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a><span class="fu">min</span>(<spa