How are these numbers calculated?

Big Games

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

If winner is:HomeAway
Saturday, 8/13100.0*Chance in playoffs100.0*Average seed
Dad vs Matt-10.0+10.0
-0.2+0.2
Matt vs Will+10.0-10.0
+0.2-0.2
If winner is:HomeAway
Sunday, 8/14100.0*Chance in playoffs100.0*Average seed
Will vs Matt-10.0+10.0
-0.2+0.2
Matt vs Dad+10.0-10.0
+0.2-0.2

What If

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

100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123Count
10-12In1002,388,354*
99-3In9916,251,643
88-4In95513,977,331
77-5In653522,299,611
66-691.4%983926,012,013
55-734.7356522,298,367
44-85.459513,976,756
33-90.61996,250,274
0-2Out1002,386,420*
Total:66.7%333333115,840,769

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs