The school bought a batch of desks and distributed them to 18 classes on average. Each class got 25 desks. How many desks did the school buy?
学校买来一批课桌，平均分给18个班，每班分得25张，学校买来了多少张课桌？
<gadget id="calculator">25 * 18</gadget>
<output>450</output>

<result>450</result>