How are these numbers calculated?

Big Games

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

Week of 1/28100.0*Chance in playoffs100.0*Average seed
Reston 1 Howard 3 -0.5
-0.4
Piedmont 2 Baltimore 5 -0.2
+0.0
Navy 1 Bowie 3 -0.2
-0.1
Harford 7 Potomac 3 -0.1
Metro 7 TriCity 1 +0.1
-0.1
Reston 3 Hagerstown 2 +0.5
Bowie 2 Metro 1 +0.1
Baltimore 3 TriCity 1 +0.1
Week of 2/4100.0*Chance in playoffs100.0*Average seed
Bowie 4 Reston 2 -0.5
Harford 2 TriCity 0 +0.2
TriCity 0 Potomac 1 +0.2
Harford 0 Piedmont 3 -0.1
Week of 2/11100.0*Chance in playoffs100.0*Average seed
Piedmont 3 Metro 3 -0.5
If winner is:HomeHome OTTieAway OTAway
TriCity vs Navy-0.2+0.1+0.1+0.1+0.1
TriCity vs Bowie-0.2+0.1+0.1+0.1+0.1

What If

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

100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-OTLTplayoffs1234567891011Count
170-000Out861420,572,344
Total:Out861420,572,344
Points
Chance Will Make Playoffs