JATER

假設原本有$10, 用$8買雞, 剩$25.39.217.77:8898$ c1 Q5 p4 c5 j1 [' C
之後$9賣出, $2+$9 = $11tvb now,tvbnow,bttvb7 i2 R# Q; I' V- z' u5 J+ |$ {% P
再用$10買雞, $11-$10 = $15.39.217.77:8898. a8 f5 M/ O. w9 m. ?( _8 w7 `
又再以$11賣出, $1+$11 = $12tvb now,tvbnow,bttvb4 }  ^0 T) w& a+ T/ M: G
$12-$10 = 賺$2