How are these numbers calculated?

Big Games

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

Week of 2/11100.0*Chance in playoffs100.0*Average seed
Fabian 225.85 Chay 219.2 -7.7
-0.1
Mason 204.8 Richard 221.2 +4.2
+0.1
Michael 149.45 Joe 156.05 -3.5
-0.1
Travis 271.3 Andrew 179.05 +1.4
+0.0
If winner is:HomeTieAway
Week of 2/18100.0*Chance in playoffs100.0*Average seed
Trevor vs Chay-5.0-1.5+24.2
-0.1-0.0+0.4
Mason vs Joe+8.6+12.4-7.9
+0.1+0.2-0.1
Travis vs Fabian-8.4+2.1+2.4
-0.2+0.0+0.1
Richard vs Andrew+0.7+0.7-0.6
Michael vs Ryan+0.1+0.1-0.0

What If

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

100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-L-Tplayoffs12345678910Count
243-0-0In12884,554,567
232-0-192.1%191801,379,720
222-1-090.41899026,515,152
1-0-261.6623440107,348
211-1-155.55538603,474,072
0-0-315.4154632602,400
201-2-046.947449023,918,282
0-1-211.71241361110107,496
190-2-16.97323919301,382,916
180-3-03.23234028505,420,667
Total:64.8%16324830066,862,620
Games Above .500
Chance Will Make Playoffs