A bookstore buys back two kinds of books A and B with the same price, among which the A book accounts for (3/5), and it needs to pay 78% of the price to the wholesaler; the B book needs to pay 82% of the price to the wholesaler. Please calculate, what is the percentage of the bookstore's profit after selling the two books at the price?
某书店购回甲、乙两种定价相同的书，其中甲种书占(3/5)，需按定价的78%付款给批发商；乙种书需按定价的82%付款给批发商．请计算，书店按定价销售完这两种书后获利的百分率是多少？
<gadget id="calculator">25.6 / 100</gadget>
<output>0.256</output>

<result>0.256</result>