There are 12 rows of pear trees with 25 trees in each row in the grove of Xiangyang Park, and 18 rows of orange trees with 27 trees in each row. How many pear trees and orange trees are there in this grove?
向阳公园的小树林里有12行梨树，每行25棵，有18行橘子树，每行27棵，这个小树林里有梨树和橘子树共多少棵？
<gadget id="calculator">12 * 25</gadget>
<output>300</output>

<gadget id="calculator">18 * 27</gadget>
<output>486</output>

<gadget id="calculator">300 + 486</gadget>
<output>786</output>

<result>786</result>