How to skip certain paragraph tags?

Hi, can you please let me know how can I skip certain paragraph tags from both counting and ad inserting? Let me give you an example, Let’s say I want to show ads after 3rd paragraph and I’ve a page structure like this:

<p>...</p>
<p>...</p>
<div class="something">
	<p>...</p>
	<p>...</p>
	<p>...</p>
</div>
<p>...</p>
<p>...</p>

Now in this case the ads shows up here:

<p>...</p>
<p>...</p>
<div class="something">
	<p>...</p>
	[AD IS HERE]
	<p>...</p>
	<p>...</p>
</div>
<p>...</p>
<p>...</p>

But I want to skip all p tags under <div class="something"> from both counting and ad inserting so that it shows up like this:

<p>...</p>
<p>...</p>
<div class="something">
	<p>...</p>
	<p>...</p>
	<p>...</p>
</div>
<p>...</p>
[AD IS HERE]
<p>...</p>

Can you please let me know how can I achive this? Also how can I skip multiple scenarios like this?

Looking forward to your reply. Thanks again for making this amazing plugin.