假設原本有$10, 用$8買雞, 剩$2TVBNOW 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。+ P9 p" L; h8 ]7 c! i
之後$9賣出, $2+$9 = $11
) Z# Q7 \3 P+ b8 V! [! y0 V8 r! T再用$10買雞, $11-$10 = $1, f7 _: f9 _% c! D3 C
又再以$11賣出, $1+$11 = $12tvb now,tvbnow,bttvb0 B% B4 G, g- {# \" q( v+ s' X
$12-$10 = 賺$2 |