The cement factory plans to produce a batch of cement, which was originally planned to be completed in 25 days. Due to the renewal of equipment, 60 bags more than the original plan was produced every day, so the task was completed in only 20 days. How many bags of this batch of cement are there?
水泥厂计划生产一批水泥，原计划25天完成，由于更新设备，每天比原计划多生产60袋，因此只用20天就完成了任务．求这批水泥有多少袋？
<gadget id="calculator">25 - 20</gadget>
<output>5</output>

<gadget id="calculator">20 / 5</gadget>
<output>4</output>

<gadget id="calculator">60 * 4 * 25</gadget>
<output>6_000</output>

<result>6_000</result>