197 is the right answer.
* d$ `4 D/ l4 ?5 A* `0 {tvb now,tvbnow,bttvbwww2.tvboxnow.com7 ^# y( Z, [) \
Reason, 公仔箱論壇5 g, F# D# K! h
3 B8 t+ F+ s7 c% T公仔箱論壇1. $18 costs on Item = -$18
6 b1 I6 ^6 I' s p2. got $100 fake, (no income) , layout $79, = -$79
/ o" _ Z% L! ?) @6 s+ v5 ~3. pay back to $100 to that vendor whom exchange fake $100 here -$100 www2.tvboxnow.com$ [: p+ }0 d& D- l+ o
& t) l+ G4 m0 G+ M; p: |+ X% iTherefore, totally, 18+79+100 = 197  |