835 tourists came to Lu Xun's former residence in the morning, 576 tourists left at noon, and 349 tourists came in the afternoon. How many tourists are there in Lu Xun's former residence at this time?
鲁迅故居上午来了835个游客，中午走了576个游客，下午又来了349个游客，这时鲁迅故居里一共还有多少游客？
<gadget id="calculator">835 - 576</gadget>
<output>259</output>

<gadget id="calculator">259 + 349</gadget>
<output>608</output>

<result>608</result>