How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Thursday100.0*Chance in playoffs100.0*Average seed
Nashville 2 Dallas 0 -21.7
-0.7
Colorado 2 Columbus 5 +15.9
+0.3
Philadelphia 2 Buffalo 1 +4.9
+0.2
Washington 4 Florida 2 -2.3
-0.1
Ottawa 1 Boston 3 +1.0
+0.1
Calgary 3 Vancouver 2 +0.4
-0.1
Los Angeles 5 San Jose 6 (so)*+0.1
FridayNone

* A starred number could be exactly 0 or just really small. The simulation did not run long enough to know.

What If

Chances based on how well the Dallas finish out the regular season.   Explain

100100100100100100100100100100100100100100100100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPWL-OTplayoffs123456789101112131415161718192021222324252627282930Count
9110-067.6%6832884,891
9000-128.82937313327,894
8901-0Out93441161,019,301
Total:31.0%3122201972,232,086
Points
Chance Will Make Playoffs