73$ bcus shoe = 15$5.39.217.77:88981 A1 F' a/ D: u5 K8 F4 j' b5 ^9 |; V+ P4 @
the boss paid to customer change = 29$ % X, C& m$ C' q# n4 p公仔箱論壇 the boss paid back to other ppl = 29$ / Y! S, q1 H0 i5.39.217.77:88981 \" t9 e* o& ?5 G( u, d' F
so, 15$ + 29$ + 29$ = 73$