營業淨利4,125,000
=3,750,000+375,000
期末存貨3,000,000 =600,000*5
銷貨成本21,600,000 =(600,000+3,000,000)*12/2
銷貨毛利8,400,000 =30,000,000-21,600,000
營業費用4,275,000 =8,400,000-4,125,000