A restaurant has square tables that can seat 4 people. For customers with more than 4 people, the restaurant owner puts the tables together and arranges them in a row. Two tables can seat 6 people together. So how many people can sit on 8 tables together?
一家餐馆有能坐4人的方桌，对于多于4人的顾客，餐馆老板就把桌子拼在一起，摆成一行，2张桌子拼在一起能坐6人．那么8张桌子拼在一起能坐多少人．
<gadget id="calculator">4 + 14</gadget>
<output>18</output>

<result>18</result>