There are 300 peach trees in the orchard, and the number of pear trees is 20% less than that of peach trees. How many pear trees are there in total?
果园里有桃树300棵，梨树的棵数比桃树少20%，梨树一共有多少棵？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">300 * (4/5)</gadget>
<output>240</output>

<result>240</result>