In a high school, the ratio of the number of volunteers participating in the Expo site to the volunteers participating in the Expo city is 4:5. It is known that the number of volunteers participating in the Expo site is 240, so how many people participated in the World Expo city service?
某高中，参加世博会园区志愿者和参加世博会城市志愿服务人数比是4：5，已知参加世博会园区人数是240人，那么参加世博会城市服务的人数是多少？
<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">240 * (5/4)</gadget>
<output>300</output>

<result>300</result>