A book-binding machine can bind 130 books per hour on average. According to this calculation, how many copies can be bound in 24 hours.
一台装订书的机器，平均每小时装订130本．照这样计算，24小时能装订多少本．
<gadget id="calculator">130 * 24</gadget>
<output>3_120</output>

<result>3_120</result>