The young pioneers planted trees. The first group of 13 people planted 2 trees each; the second group of 14 people planted 40 trees in total. How many trees did the two groups plant in total?
少先队员种树，第一组13人，每人种2棵；第二组14人，共栽40棵．两个小组一共种多少棵树？
<gadget id="calculator">13 * 2</gadget>
<output>26</output>

<gadget id="calculator">26 + 40</gadget>
<output>66</output>

<result>66</result>