In a fertilizer factory, two workshops jointly produce 2,400 tons of fertilizer. The first workshop produces 250 tons per day, which is 20 tons more than the second workshop. How many days will it take to complete the task?
一个化肥厂，两个车间共同生产2400吨化肥，第一车间每天生产250吨，比第二车间多20吨，需要多少天完成任务？
<gadget id="calculator">250 - 20</gadget>
<output>230</output>

<gadget id="calculator">250 + 230</gadget>
<output>480</output>

<gadget id="calculator">2_400 / 480</gadget>
<output>5</output>

<result>5</result>