197 is the right answer.
8 m2 }2 q% s' m V# X9 H* E
4 D( {, O9 t# a$ Y, V: r: }tvb now,tvbnow,bttvbReason, . ~) ?: U* O# d
2 |; W! c, ?3 {5 b$ I$ F1. $18 costs on Item = -$18
7 {) P: S: ?# W& |+ k! ptvb now,tvbnow,bttvb2. got $100 fake, (no income) , layout $79, = -$79公仔箱論壇# |9 x$ o0 c0 j; J
3. pay back to $100 to that vendor whom exchange fake $100 here -$100
$ _4 l: t. V3 m1 y. B5.39.217.76
5 b" d0 Z$ p7 ]& U- Itvb now,tvbnow,bttvbTherefore, totally, 18+79+100 = 197  |