There are 300 pear trees in the orchard, which are less than apple trees (1/4). How many apple trees are there?
果园里有梨树300棵，比苹果树少(1/4)，苹果树有多少棵？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">300 / (3/4)</gadget>
<output>400</output>

<result>400</result>