There were 498 passengers in Donghu Park in the morning and 163 people left at noon. Another 205 tourists came in the afternoon. How many tourists are there in the park at this time?
东湖公园内上午有乘客498人，中午有163人离开．下午又来了205位游客，这时公园内有多少位游客？
<gadget id="calculator">498 - 163</gadget>
<output>335</output>

<gadget id="calculator">335 + 205</gadget>
<output>540</output>

<result>540</result>