The school bought 20 boxes of chalk, 25 boxes for each box, and 4 yuan for each box. How much does it cost in total?
学校买来20箱粉笔，每箱25盒，每盒4元，一共要付多少元？
<gadget id="calculator">4 * 25 * 20</gadget>
<output>2_000</output>

<result>2_000</result>