Class 3 and Class 3 lined up to go home after school. There were 14 people in the first team, 17 people in the second team, and 20 people in the third team. How many people are there on average per team?
三3班同学放学排队回家，第一队14人，第二队17人，第三队20人．平均每队有多少人？
<gadget id="calculator">14 + 17 + 20</gadget>
<output>51</output>

<gadget id="calculator">51 / 3</gadget>
<output>17</output>

<result>17</result>