How are these numbers calculated?

Big Games

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

If winner is:HomeAway
Week of 10/2100.0*Chance in playoffs100.0*Average seed
St. Stanislaus vs Vancleave+15.3-15.3
+0.7-0.7
If winner is:HomeAway
Week of 10/9100.0*Chance in playoffs100.0*Average seed
St. Stanislaus vs Bay+15.3-15.3
+0.7-0.7

What If

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

100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456Count
55-0In100132,674,166
44-1In70291654,705,761
33-299.8%839421101,309,350,425
22-353.1011423981,309,341,184
11-41.012970654,712,710
00-5Out100132,688,726
Total:66.7%1717171717174,193,472,972
Games Above .500
Chance Will Make Playoffs