Class A and Class B of the fifth grade participated in the school art festival. Class A had 24 participants, and the number of participants in Class B was 1.5 times less than that of Class A by 9 students. How many more people from Class B participated in the art festival than Class A?
五年级甲班和乙班参加学校艺术节，甲班有24人参加，乙班参加的人数比甲班的1.5倍少9人．乙班参加艺术节的比甲班多多少人？
<gadget id="calculator">24 * 1.5</gadget>
<output>36</output>

<gadget id="calculator">36 - 9</gadget>
<output>27</output>

<result>27</result>