The number of people in the dance group is between 30 and 40. If every 9 people are divided into groups, they can be divided exactly; if every 12 people are divided into groups, they can be divided exactly. How many people are there in the dance group?
舞蹈组的人数在30～40之间．如果每9人一组分组，能正好分完；如果每12人一组分组，也能正好分完．舞蹈组有多少人？
<gadget id="calculator">2 * 2 * 3 * 3</gadget>
<output>36</output>

<result>36</result>