There are 60 pine trees, which are 1/4 more than poplar trees. How many poplar trees are there?
松树有60棵，比杨树多(1/4)，杨树多少棵？
<gadget id="calculator">1 / 4</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">60 / (5/4)</gadget>
<output>48</output>

<result>48</result>