73$ bcus shoe = 15$( }7 `6 X$ b) _7 \/ v2 C
the boss paid to customer change = 29$ 2 I1 h5 M8 C( |* ?$ v, T公仔箱論壇 the boss paid back to other ppl = 29$ 5 r( I, f7 [& F- HTVBNOW 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。1 O' j% j$ h, N8 m3 }' q1 |8 W2 v
so, 15$ + 29$ + 29$ = 73$