The school organizes young pioneers to visit the photo exhibition of creating a civilized city. 12 people went to the fifth grade, and 20 people went to the sixth grade, 1.5 times more than the fifth grade. How many people went to the sixth grade?
学校组织少先队员参观创建文明城市图片展．五年级去了12人，六年级去的人数比五年级的1.5倍多20人．六年级去了多少人？
<gadget id="calculator">12 * 1.5</gadget>
<output>18</output>

<gadget id="calculator">18 + 20</gadget>
<output>38</output>

<result>38</result>