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*Last Place100.0*Average seed
Princeton 35 Cornell 9 +13.5
+7.9
No
+0.5
Brown 34 Penn 31 +5.8
+0.1
+0.1
Dartmouth 13 Harvard 28 -2.3
+0.1
If winner is:HomeAway
Week of 11/5100.0*Chance wins regular season title100.0*First Division100.0*Last Place100.0*Average seed
Princeton vs Dartmouth+16.2-16.2
Yes-1.8
+0.4-0.4
Harvard vs Columbia-5.4+5.4
-0.4+0.4
-0.1+0.1
Cornell vs Penn+4.8-4.9
-0.3+0.3
+0.1-0.1
Yale vs Brown-4.8+4.8
+0.3-0.3
-0.1+0.1

What If

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

100100100100100100100100
If finish:FirstChance will finish regular season at seedLast
TWW-LChance wins regular season titleDivision12345678PlaceCount
73-0YesYes100No1,366,757
62-185.4%Yes8515No4,094,595
51-223.3Yes2349252No4,095,819
40-3No85.5%53645140No1,367,165
Total:53.3%98.2%532514620No10,924,336
Games Above .500
RPI