There are 25% more pear trees than apple trees in an orchard, how much less apple trees than pear trees
果园里梨树棵数比苹果树多25%，苹果树比梨树少多少
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">(1/4) / (5/4)</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>