How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 11/17100.0*Chance in playoffs100.0*Average seed
dav 105 tai 67.5 +12.5
+0.8
wel 61 she 80.5 +2.9
+0.1
mcn 118 war 81 -2.7
-0.1
pin 126.5 tot 101 -1.6
arn 58 thi 86.5 +0.9
+0.1
sco 129.5 con 127.5 -0.1
If winner is:HomeAway
Week of 11/24100.0*Chance in playoffs100.0*Average seed
dav vs thi+18.4-16.5
+0.9-0.8
mcn vs she-3.8+4.7
-0.1+0.1
wel vs tot-3.7+4.3
-0.1+0.2
pin vs tai+2.9-3.2
+0.1-0.1
sco vs war-1.2+1.1
-0.1+0.1
arn vs con+0.4-0.3
-0.1+0.0

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-Lplayoffs123456789101112Count
01-22.2%22242286017,615,785
2-148.81113837121016,485,163
0-3Out0835451116,278,396
3-097.1111333517305,147,120
Total:29.5%01481623221682045,526,464
Points
Chance Will Make Playoffs