197 is the right answer.
6 W4 T; B" U$ E! }tvb now,tvbnow,bttvb8 D* s7 v4 o. [2 ^6 I/ a7 F
Reason,
- R9 c1 x% f4 e% p
' v6 _7 o5 B0 y' j6 C% [9 s. t* I/ ]1. $18 costs on Item = -$18tvb now,tvbnow,bttvb8 ?" \8 ~$ X5 G% m- o
2. got $100 fake, (no income) , layout $79, = -$79公仔箱論壇1 g; D1 B4 p6 J7 i, K
3. pay back to $100 to that vendor whom exchange fake $100 here -$100 * g l1 R9 O5 V- S1 y5 w4 o
: ^/ j( y# S5 u v% p0 q
Therefore, totally, 18+79+100 = 197  |