How are these numbers calculated?

Big Games

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

Week of 7/31100.0*Average seed
Jeb's 14 Chara 4 +0.3
Glory 11 Puckin 3 +0.0
Week of 8/7100.0*Average seed
Jeb's 9 Puckin 3 +0.4
Jurassic 15 Chara 10 +0.1
Puck Bud 12 Disco 2 +0.0
If winner is:HomeAway
Week of 8/14100.0*Average seed
Puckin vs Jeb's-0.6+0.4
Chara vs Jurassic-0.3+0.2
Disco vs Puck Bud-0.3+0.1

What If

Chances based on how well the Jeb's finish out the regular season.   Explain

100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910Count
31-0Out3755963,547,476
20-1Out41441536,761,544
Total:Out2350225100,309,020
Games Above .500
Chance Will Make Playoffs