During the National Day on October 1, 607 people visited the Zhu De Memorial Hall in the morning, 278 people left at noon, and 325 people came to visit in the afternoon. How many people visited the Zhu De Memorial Hall in the afternoon?
十月一日国庆节时朱德纪念馆上午有607人参观，中午有278人离开，下午又有325人来参观，下午有多少人在朱德纪念馆参观？
<gadget id="calculator">607 - 278</gadget>
<output>329</output>

<gadget id="calculator">329 + 325</gadget>
<output>654</output>

<result>654</result>