假設原本有$10, 用$8買雞, 剩$2
) u! I8 _3 w/ _3 v! H0 ^+ Y. c% x d9 z5.39.217.77之後$9賣出, $2+$9 = $11
3 e2 j8 q+ |" V' G( d: L, l" b5.39.217.77再用$10買雞, $11-$10 = $1& ~; ]! O0 C. P5 D0 t' h' @* c
又再以$11賣出, $1+$11 = $12
4 j1 N" P% N* {$ T" i; ^0 v0 ]TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。$12-$10 = 賺$2 |