The afforestation team planted a batch of trees. It was originally planned that 40 people would plant trees. On average, 15 trees could be planted per person. In fact, 10 people planted more trees. How many trees did each person plant on average?
绿化队栽一批树，原计划40人栽树，平均每人栽15棵可以栽完，实际增加了10人栽树，实际平均每人栽树多少棵？
<gadget id="calculator">15 * 40</gadget>
<output>600</output>

<gadget id="calculator">40 + 10</gadget>
<output>50</output>

<gadget id="calculator">600 / 50</gadget>
<output>12</output>

<result>12</result>