There were 874 tourists in Gannan Hakka Museum in the morning, 378 people left at noon, and 389 people came in the afternoon. How many tourists are there in Gannan Hakka Museum at this time?
赣南客家博物院上午有游客874人，中午有378人离去，下午又来了389人，这时赣南客家博物院内有游客多少人？
<gadget id="calculator">874 - 378</gadget>
<output>496</output>

<gadget id="calculator">496 + 389</gadget>
<output>885</output>

<result>885</result>