This semester is coming to an end. In order to encourage students with good performance, Xinfa Primary School bought 500 notebooks as prizes. Each notebook is 2.8 yuan. How much did you spend on these prizes?
本学期即将结束，信发小学为了鼓励表现好的学生，买了500本笔记本作为奖品，每本笔记本2.8元，买这些奖品一共花了多少钱？
<gadget id="calculator">2.8 * 500</gadget>
<output>1_400</output>

<result>1_400</result>