How are these numbers calculated?

Big Games

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

Week of 2/17100.0*Average seed
National 19 Crottes 18 -0.2
Mile-Enders 13 Crew 21 -0.0
Week of 2/24100.0*Average seed
National 16 Crew 14 -0.4
Mile-Enders 21 Loonies 9 +0.2
If winner is:HomeHome OTHome SOTieAway SOAway OTAway
Week of 3/2100.0*Average seed
National vs Loonies-0.5-0.5-0.5-0.5+0.2+0.2+0.2
Bizoune vs Mile-Enders-0.1-0.1-0.1-0.1+0.2+0.2+0.2

What If

Chances based on how well the Mile-Enders finish out the regular season.   Explain

100100100100100100100100100100
If finish:Chance inBooseChance will finish regular season at seed
TPW-L-Tplayoffsd'Or12345678910Count
121-0-0OutNo10017,082,817
110-0-1OutNo71291,516,516
100-1-0OutNo693157,268,087
Total:OutNo762475,867,420
Games Above .500
Chance Will Make Playoffs