</span>
<span class="identifier">invert</span><span class="special">(</span><span class="identifier">_1</span> <span class="special">*</span> <span class="identifier">_2</span><span class="special">);</span>               <span class="comment">// --&gt; _1 / _2</span>
<span class="identifier">invert</span><span class="special">(</span><span class="identifier">_1</span> <span class="special">*</span> <span class="identifier">_2</span> <span class="special">/</span> <span class="identifier">_3</span><span cla