How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Sunday100.0*Average seed
Cov 4 Bra 2 -0.3
Edi 4 Dun 3 +0.1
Not 1 Bel 3 +0.0
If winner is:HomeAway
Wednesday100.0*Average seed
Hul vs Bra-0.3+0.2

What If

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

100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910Count
3210-0In964097,617
319-1In80201853,451
308-2In4944703,602,310
297-3In185428008,580,618
286-4In334594012,917,986
275-5In0966241012,870,637
264-6In01345114008,649,987
253-7100.0%0640467003,873,009
242-8100.0095034601,107,940
231-998.3001848312182,558
220-1082.00119611826,387
Total:100.0%9234118710052,762,500
Games Above .500
Chance Will Make Playoffs