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
Vancleave vs Moss Point+15.3-15.3
+0.7-0.7

What If

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

100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456Count
55-0In100132,659,650
44-1In70291654,713,674
33-299.8%839421101,309,410,022
22-353.1011423981,309,362,764
11-41.012970654,670,431
00-5Out100132,656,431
Total:66.7%1717171717174,193,472,972
Games Above .500
Chance Will Make Playoffs