Investors & landlords

@DianeW777 @AmeliesUncle @Carl 

This is the worksheet I am looking at from pg. 15 of IRS Pub. 523 (2020). The worksheet is in here to help figure the gain on the "Home" part of the house (as opposed to the "Business" part of the house.) There are lines to write in depreciation taken from a home office or renting out a spare bedroom in your home. This is the "Home" portion of the depreciation I am referring to in my question #1. I'm still confused by how this worksheet makes sense with the answers I've gotten. Can you help me understand what is going on here?