How are these numbers calculated?

Big Games

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

Week of 1/22100.0*Chance in playoffs100.0*Average seed
Swarm 14 Mammoth 15 +12.2
+0.8
Wings 11 Mammoth 12 +7.2
+0.6
Rush 11 Bandits 7 -1.6
-0.1
Roughnecks 15 Stealth 16 +1.2
Stealth 13 Bandits 11 -0.5
Week of 1/29100.0*Chance in playoffs100.0*Average seed
Mammoth 11 Stealth 12 -5.7
-0.6
Bandits 11 Swarm 7 +2.6
+0.1
Rush 14 Roughnecks 11 +0.6

What If

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

100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs1234567891011Count
40-0Out10010,000,000
Total:Out10010,000,000
Games Above .500
Chance Will Make Playoffs