how to open the numbers window in the same place?

I like to have the Numbers window open in the same place every time (lower right hand corner of the screen), so that I can have the windows of other programs open too. As it is, I have to move it there every time. This isn't a big deal, I realize, but I didn't have to do that with the previous version: it always opened the window to the last place it was located when I closed the program the previous time.

Any tips would be appreciated!