73$ bcus shoe = 15$ 4 p: G6 O1 z7 W0 C" W) ~$ f: ^ the boss paid to customer change = 29$公仔箱論壇+ V6 S) U5 p' l* B* k
the boss paid back to other ppl = 29$公仔箱論壇6 V5 L; m3 v6 q6 W: l: L* U9 L4 c
5.39.217.77:88989 w `8 R' r0 x# e* `) H
so, 15$ + 29$ + 29$ = 73$