[Closed] How to divide an object in equal parts?

Hi guys!

      I wish that if a change the value "Split in" from 1 in 4 for exp., to split/divide a piece in 4 equal  parts and  add, at the junction of two new pieces (see picture) - another one piece "L", a side.
How to do that? Is this possible?
      
      Here is the image:
   [[img] http://img851.imageshack.us/img851/1954/howtodothis.png[/img]]( http://img851.imageshack.us/img851/1954/howtodothis.png[/img]](  g"/> /)
  
 
 Thanks!
   
    [img] http://imageshack.us/photo/my-images/851/howtodothis.png/[/img][img] http://imageshack.us/photo/my-images/851/howtodothis.png/[/img][img]  g"/> /[/img]