Xingwang Farm planted 20 rows of peach trees and 20 rows of pear trees, each with 15 trees. How many fruit trees does Xingwang Farm have?
兴旺农场种植桃树和梨树各20行，每行都有15棵．兴旺农场共有多少棵果树？
<gadget id="calculator">15 * 20 * 2</gadget>
<output>600</output>

<result>600</result>