The number of people participating in the aircraft model group (3/4) of the sixth grade class is the same as that of the art group. There are 9 people participating in the art group. How many people are participating in the aircraft model group?
六年级一班参加航模组人数的(3/4)与美术组的人数同样多，参加美术组的有9人，参加航模组的有几人？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">9 / (3/4)</gadget>
<output>12</output>

<result>12</result>