Formula to work out 160th user?
<p>I have a table of users updated everyday - I want to get every 160th user.</p>

<p>I know I need to do a count to see if there are above 160 or 320 users so then I can take that user out but how would this formula work?</p>

<p>Do I divide the count of users by 160?</p>

<p>But how do I know whether its the 160th or 320th user is need?</p>

<p>This check is going to happen after every user signs up, so once the user is added to the db I need to see if they are a multiple of 160 then send them an email basically (db users can go over 165000).</p>
