The students in class 31 are practicing shooting. Xiaobei made 7 shots, Xiaoxin made 5 shots, and Xiaohui made 6 shots. So how many shots did the three of them make on average?
三1班的学生在练习投篮，小贝投中了7个，小欣投中了5个，小慧投中了6个，那么他们三个人平均投中了多少个．
<gadget id="calculator">7 + 5 + 6</gadget>
<output>18</output>

<gadget id="calculator">18 / 3</gadget>
<output>6</output>

<result>6</result>