The teachers and students of the experimental primary school participated in the tree planting activity, and 30 people planted 180 trees in 0.5 hours. According to this calculation, how many trees were planted by 52 people in 2 hours.
实验小学师生参加植树活动，30人0.5小时植树180棵，照这样计算，52人2小时植树多少棵．
<gadget id="calculator">180 / 30 / 0.5</gadget>
<output>12</output>

<gadget id="calculator">12 * 52 * 2</gadget>
<output>1_248</output>

<result>1_248</result>