There are 20 people in the Meteorology Team of the Children's Palace, 6 more people in the Art Team than in the Meteorology Team, and twice as many people in the Biology Team as in the Art Team. How many biology groups are there?
少年宫气象小组有20人，美术小组比气象小组多6人，生物小组的人数是美术小组的2倍．生物小组有多少个？
<gadget id="calculator">20 + 6</gadget>
<output>26</output>

<gadget id="calculator">26 * 2</gadget>
<output>52</output>

<result>52</result>