Hefei Science and Technology Museum had 852 visitors in the morning and 265 people left at noon. Another 403 people came in the afternoon. How many people are there in the Science and Technology Museum in the afternoon?
合肥科技馆上午参观人数是852人，中午有265人离去．下午又来了403人，下午科技馆还有多少人？
<gadget id="calculator">852 - 265</gadget>
<output>587</output>

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

<result>990</result>