I have created a 2 column layout in the editor using divs. When I press enter within these columns, it is creating new divs rather than <p> or <br> tags. Is there a setting to override this?

<code>

<div style ="float left; width:50%">
some text goes here
<div style ="float left; width:50%"> < --- This automated div is wrong! Should be either <br> or <p>
the next paragraph is here
</div>
</div>

</code>