For my anime list people, the 79 chapters are 76 chapters + 3 extra chapters in between the volumes, so chapter 76 is the last chapter.
For the 3 missing chapters, I don’t think I will scanlate them, doing the last 3 chapters has taken me a lot of time, especially the redraws. I think I have done around 80 redraws for those 3 chapters alone, but probably because chapter 75 is action packed.
Anyways, If you’re a typesetter/redrawer and want to scanlate them, contact me and I will be willing to translate it for you.