73$ bcus shoe = 15$6 f( W/ y( n4 v; y$ Z
the boss paid to customer change = 29$TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。4 L* M1 W! m& q F
the boss paid back to other ppl = 29$公仔箱論壇5 K2 K1 [+ R- L5 ~! G$ ?9 i
; a: W* N/ J0 I% c3 z
so, 15$ + 29$ + 29$ = 73$