The school needs to buy 3 boxes of table tennis balls, each box is 30 boxes, and each box costs 24 yuan. How much did the school spend on buying table tennis balls?
学校要买3箱乒乓球，每箱30盒，每盒24元，学校买乒乓球用了多少钱？
<gadget id="calculator">30 * 3 * 24</gadget>
<output>2_160</output>

<result>2_160</result>