Luoyuan Cinema has 380 seats downstairs and 250 seats upstairs. How many seats does Luoyuan Cinema have?
罗源电影院楼下有380个座位，楼上有250个座位，罗源电影院一共有多少个座位？
<gadget id="calculator">380 + 250</gadget>
<output>630</output>

<result>630</result>