There are 852 tourists in Zhongshan Park in the morning, 265 people leave at noon, and 403 people come in the afternoon. How many tourists are there in the park at this time?
中山公园里上午有852名游客，中午有265人离去，下午又来了403人，这时公园里有多少名游客？
<gadget id="calculator">852 - 265</gadget>
<output>587</output>

<gadget id="calculator">587 + 403</gadget>
<output>990</output>

<result>990</result>