For a commodity, the cost of each piece is a yuan, and the cost is increased by 25% as the selling price, and the price is reduced due to the backlog in the warehouse, and the price is sold at 92% of the price, how much profit can be made for each piece.
一种商品，每件成本是a元，将成本增加25%定为出售价格，后因仓库积压减价，按价格的92%出售，每件还能盈利多少．
<result>0.15</result>