It costs 2.45 yuan per kilogram of apples, and Xiao Ming bought 4.5 kilograms, how much should he pay?
每千克苹果要2.45元，小明买了4.5千克，应付多少元？
<gadget id="calculator">2.45 * 4.5</gadget>
<output>11.025</output>

<result>11.025</result>