I have to probably pay people even if we produce nothing. And so let's say that fixed cost in the week is $1,000. And then as my quantity increases, so do my costs. So if I produce 100 units right over here, then my cost goes up to 1,300. 1,300. If I produce more than that, you see my costs increase and they increase at an ever faster rate. Now, I go into a lot more depth on things like cost functions in the economics playlist.