An Oriental miracle [ABCDkou otu theory 6]With the 400% enten reduction, I will prepare for the article which balanced with quantity of enten which I marketed. If the production cost price of the article of 1,000,000 yen is 100,000 yen, therefore the production cost price is 400,000 yen for 4. Because 600,000 yen are left, I can easily understand.