Price to Book from Ch. 2 edgar_xbrl notebook

I was trying to calculate the historic Price to Book for AMZN by altering the chapter 2 edgar notebook. I’ll very knew at this so any help would be appreciated, especially if you can “talk to me like a 10 year old.”

Also, I wanted to pull EBIT (without the DA), but haven’t had much luck with non-gaap items.

It seems that most places like Yahoo Finance and YCharts, etc charge an arm and a leg to pull that kind of historic ratios so definitley would love to be able to pull it and calculated it myself.