The school organizes students to watch the docking video of "Shenzhou 10" and "Tiangong 1" in the conference room. There are 6 classes in the second grade, and each class selects 3 male students and 4 female students to watch. How many seats should be arranged if there are 1 seat for students watching?
学校组织同学们在会议室观看"神舟十号"与"天宫一号"的对接视频，二年级有6个班，每个班选3名男同学和4名女同学观看，如果给二年级每名观看的同学安排一个座位，那么应该安排多少个座位？
<gadget id="calculator">3 * 6</gadget>
<output>18</output>

<gadget id="calculator">4 * 6</gadget>
<output>24</output>

<gadget id="calculator">18 + 24</gadget>
<output>42</output>

<result>42</result>