197 is the right answer.
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/ @6 l! J+ d! n# D5.39.217.77Reason,
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1. $18 costs on Item = -$18
& p3 E& M" G2 P, J# [5 A9 X5.39.217.772. got $100 fake, (no income) , layout $79, = -$79' [$ p7 y, D+ c" m6 P3 Q# u) E% i4 x
3. pay back to $100 to that vendor whom exchange fake $100 here -$100
' l' ]; m* t% n5.39.217.77
. u% _. G& Z7 v& R3 s6 F7 ^5 OTherefore, totally, 18+79+100 = 197  |