How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

If winner is:HomeTieAway
Wednesday, 4/10100.0*Average seed
EC vs MCN-0.6-0.6+0.2
SAL vs EC+0.1-0.6-0.6
If winner is:HomeTieAway
Thursday, 4/11100.0*Average seed
MEL vs SPA-0.4-0.3+1.9

What If

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

100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-L-Tplayoffs1234567891011Count
101-0-0In9827,219,810
90-0-1In73271,151,238
80-1-0In693136,622,758
Total:In160582644,993,806
Games Above .500
Chance Will Make Playoffs