There were 183 tourists in the science and technology park in the morning, and the number of tourists in the afternoon was exactly twice that of the morning. How many visitors are there in total on this day?
科技园内某天上午有游客183人，下午游客人数刚好是上午的2倍．这一天园内共有游客多少人？
<gadget id="calculator">183 * 2</gadget>
<output>366</output>

<gadget id="calculator">183 + 366</gadget>
<output>549</output>

<result>549</result>