

When one of my grandfathers died, none of his children or ex-wives wanted anything to do with a funeral or burial arrangements. My parents found a place that accepted his alcoholism-ravaged body, and they took care of things. I’m not sure of the details, and seems likely it wasn’t a medical school, but some organization took the body “last minute”.
I think they were trying to demonstrate the second type of dot should be increments of 10 - the missed step in the original answer - and both messed it up (started with an increment of 20 as you pointed out) and extended it way beyond what was required for the problem at hand.