The three classes of the fifth grade planted 156 trees in total. According to this calculation, if the other two classes are counted, how many trees were planted in the fifth grade?
五年级三个班共植树156棵，照这样计算，如果算上另外两个班，五年级共植树多少棵？
<gadget id="calculator">156 / 3</gadget>
<output>52</output>

<gadget id="calculator">3 + 2</gadget>
<output>5</output>

<gadget id="calculator">52 * 5</gadget>
<output>260</output>

<result>260</result>