There are 1,200 fruit trees in the orchard, of which pear trees account for 40% and peach trees account for 20%. How many of these two kinds of fruit trees are there?
果园里有果树1200棵，其中梨树占40%，桃树占20%，两种果树共有多少棵？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(2/5) + (1/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1_200 * (3/5)</gadget>
<output>720</output>

<result>720</result>