How are these numbers calculated?

Big Games

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

Thursday, 8/16100.0*Chance in playoffs100.0*Average seed
USA 13 Cht 3 -9.4
-0.3
Jap 10 Aus 0 +3.1
If winner is:HomeAway
Friday, 8/17100.0*Chance in playoffs100.0*Average seed
Aus vs ChtOutIn
-0.5+0.5

What If

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

100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678Count
41-0In10065,200,741
30-1Out10065,213,640
Total:50.0%5050130,414,381
Games Above .500
Chance Will Make Playoffs