title: JavaScript .floor number
body: <p>I want to floor a number always in the same frame of 6 numbers</p>
  
  <p>so if I would have i.e. a number between 7-13 I want to floor it to 6. If I would have number inbetween 14-20 I would like to floor it to 13, 21-27 to 20 etc etc. I there any possility to do this with <code>floor()</code></p>