73$ bcus shoe = 15$tvb now,tvbnow,bttvb$ g! M3 _# s' W4 i: T% K* \
the boss paid to customer change = 29$公仔箱論壇5 @ P; `& k) x5 b: n- H' o0 J2 N
the boss paid back to other ppl = 29$公仔箱論壇" i) m# |7 t) ~" L2 K2 U
; R. Q0 s! o: E6 C- e& g9 X
so, 15$ + 29$ + 29$ = 73$