There are 24 people participating in the art group. The number of people in the math group is twice that of the art group. How many people are there in the math group?
参加美术组的有24人．数学小组的人数是美术小组的2倍，数学小组有多少人．
<gadget id="calculator">24 * 2</gadget>
<output>48</output>

<result>48</result>