72, I’m not going to even wait for you to ask. Please just don’t assign me another this week. If I do one, I do one. If not, please volunteer someone else. I think you’ll find a capable person if you look in the mirror.
The following dvar torah is from R’ Moshe Sternbuch’s sefer “Ta’am V’daas”
The 1st rashi on Va’Yahkhel tells us that this took place the day after Yom Kippos (11th of Tishrei).
It was purposely done on this date because it would be ideal (and even easier) to start the Mishkan and all the halachos of Shabbos after receiving the Kapara of Yom Kippor.
Additionally, there is the famous question as to why we finish the Torah on Shmini Atzeres, why not on Shavuous? The answer is that after Hoshana Raba, the Mechilla and Slicha process are completed. That is when all of Klal Yisroel are free from their blemishes and thus, we can truly have a “Simchas Torah” as we are free from our avonos. However, we cannot properly have a “Simchas Torah” is we possess the “stains” of averos for violating the same Torah we are trying to rejoice with.