How are these numbers calculated?

Big Games

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

Week of 10/29100.0*Chance wins regular season title100.0*First Division100.0*Average seed
Brown 34 Penn 31 -13.5
-6.8
-0.5
Princeton 35 Cornell 9 -5.6
+1.5
-0.1
Dartmouth 13 Harvard 28 -1.6
+0.1
If winner is:HomeAway
Week of 11/5100.0*Chance wins regular season title100.0*First Division100.0*Average seed
Cornell vs Penn-9.5+9.5
-11.7+11.7
-0.6+0.6
Princeton vs Dartmouth-5.2+5.2
+2.0-2.0
-0.1+0.1
Yale vs Brown-3.0+3.0
+0.6-0.6
-0.1+0.1
Harvard vs Columbia-1.6+1.6
-0.6+0.6
-0.1+0.1

What If

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

100100100100100100100100
If finish:FirstChance will finish regular season at seedLast
TWW-LChance wins regular season titleDivision12345678PlaceCount
63-081.2%Yes8119No1,366,612
52-116.4Yes1651303No4,094,705
41-2No89.6%63945100No4,093,983
30-3No22.612145294No1,369,036
Total:16.3%86.4%16242621940No10,924,336
Games Above .500
RPI