Buttonholes for the math impaired
Today's story problem:
GrumpyGramma decided to knit a cardigan sweater and is now ready to make the eylet buttonholes. If GrumpyGramma has 123 stitches on her needle and has decided to use seven buttons, how many stitches will she need to make between buttonholes?
I know there must be a fairly simple way to figure out buttonhole placement even for the mathematically challenged such as I. A link to somewhere that tells me how to do it? I usually end up laying the buttons out as I think they should be, then count stitches and adjust until I at least think I have it right. I would appreciate any help in learning how to figure this out.