title: Sum numbers in the template
body: <p>I have a template:</p>
  
  <pre><code>&lt;template name="week_list"&gt;
      {{#each days}}
          {{day_of_month this}} &lt;br /&gt; 
  
          {{#each action_log_on_day this}}
              {{Name}} : {{Score}} &lt;br /&gt;
          {{/each}}
      {{/each}}
  &lt;/template&gt;
  </code></pre>
  
  <p>Is there a way to sum all the 'Score'-s in the template or I need to create a separate js-function (with own mongo query) for it ?</p>