odds people - what are the chances of this happening?

[beavens]

Party Poker No-Limit Hold'em, $ BB (6 max, 6 handed) internettexasholdem.com

Button ($26.35)
Hero ($35.65)
BB ($24.75)
UTG ($36.16)
MP ($30.22)
CO ($21.65)

Preflop: Hero is SB with 6[img]/images/graemlins/spade.gif[/img], 3[img]/images/graemlins/spade.gif[/img]. Hero posts a blind of $0.10.
UTG calls $0.25, MP calls $0.25, CO calls $0.25, Button calls $0.25, Hero (poster) completes, BB checks.

Flop: ($1.50) T[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(6 players)</font>
<font color="#CC3333">Hero bets $1</font>, BB folds, UTG calls $1, MP folds, CO folds, Button calls $1.

Turn: ($4.50) 7[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets $3.5</font>, UTG calls $3.50, Button calls $3.50.

River: ($15) 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets $15</font>, UTG calls $15, Button calls $21.60 (All-In), Hero calls $6.60, UTG calls $6.60.

Final Pot: $79.80

Results in white below: <font color="#FFFFFF">
Hero has 6s 3s (flush, ace high).
UTG has 9s Qs (flush, ace high).
Button has 4s Ks (flush, ace high).
Outcome: Button wins $79.80. </font>