There are potted flowers on both sides of the aisle in the park. If there are 342 pots on each side, how many pots are placed on both sides?
公园的过道两边要摆上盆花，如果每一边都放342盆，两边一共放多少盆？
<gadget id="calculator">342 * 2</gadget>
<output>684</output>

<result>684</result>