Young Pioneers carried out work-study activities: the first team of 18 people collected 12 kilograms of grass seeds, and the second team of 16 people collected 10 kilograms of grass seeds. On average, how many kilograms of grass seeds were collected by each team.
少先队员开展勤工俭学活动：第一小队18人，收集草籽12千克，第二小队16人，收集草籽10千克，平均每个队收集草籽多少千克．
<gadget id="calculator">12 + 10</gadget>
<output>22</output>

<gadget id="calculator">22 / 2</gadget>
<output>11</output>

<result>11</result>