On Sunday, Xiao Ming went shopping with his mother in the Biyibi supermarket. The price of fragrant pears is 3.15 yuan per kilogram, and his mother bought 2.4 kilograms. Please do the math, how much does it cost to buy fragrant pears?
星期天，小明和妈妈一起去比一比超市购物，香梨每千克的价格是3.15元，妈妈买了2.4千克，请你帮忙算一算，买香梨要付多少钱？
<gadget id="calculator">3.15 * 2.4</gadget>
<output>7.56</output>

<result>7.56</result>