I can't seem to understand how to check for keyword density when it comes to a keyword phrase. Like say I have a 4 word phrase I'm trying to rank for. I use it in my title tag, and in the header off my content. But after that, I don't have the chance to repeat that phrase that often in the content without looking spammy. But the content will have the individual keywords. So how do those individual keywords get factored into the keyword phrase?