title: Angular Conditional in HTML does not like less than or greater than symbols
body: <p>Simple question, cannot seem to find an answer...
  (this will be a quick 'point' for someone)</p>
  
  <p>I'm looking to have a condition in an Angular 5 ngIf be "less than" some variable.</p>
  
  <pre><code>&lt;div class="row" *ngIf="Subject &lt; 4" &gt;
  &lt;div class="row" *ngIf="Subject &lt;= 4" &gt;
  </code></pre>
  
  <p>this syntax bombs because "&lt;" - how can I do this? (without having to write function)?</p>