How do I output the contents of a variable in grid form?

I have the following code for my Ruby on Rails project, which outputs a list of users on a page:

<ul class="users">
  <%= render @users %>
</ul>`

The result is a long list of users on the page.

My question is: How can I can I manipulate @users so that I can output its content in grid form (e.g., a row of 5 users and then next row and then next and so on) on the page?