假設原本有$10, 用$8買雞, 剩$2
, H' l }" w/ H( A1 W, z公仔箱論壇之後$9賣出, $2+$9 = $11
; V4 k& @5 r8 h1 L$ w; r- ~3 DTVBNOW 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。再用$10買雞, $11-$10 = $1tvb now,tvbnow,bttvb' L9 `8 Q* J' h; J: v0 H" {
又再以$11賣出, $1+$11 = $12tvb now,tvbnow,bttvb% S- G4 c7 D( {! |
$12-$10 = 賺$2 |