買05電子343一口賣05電子343.40343=0.4*4000=1600~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~買05金融1235.4一口賣05金融1230-1235.4=5.4*1000=-5400~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~總計$-3800~~~~~~~~~~~~~~~~~~~~~~~~~~~~買05電子339.55一口賣05電子341.20-339.55=1.65=*4000=6600
