假設原本有$10, 用$8買雞, 剩$2
! n) q2 n9 p5 Q" K- {+ a2 _, C! ~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。之後$9賣出, $2+$9 = $11
( `+ _7 a0 t; L, d公仔箱論壇再用$10買雞, $11-$10 = $1
" T9 }! y5 v! C. X公仔箱論壇又再以$11賣出, $1+$11 = $12tvb now,tvbnow,bttvb, C; ^, h' Z" j) Z
$12-$10 = 賺$2 |