There are 20 fir trees on campus, and the number of poplar trees is 60% more than that of fir trees. How many poplar trees are there?
校园里有20棵杉树，杨树的棵数比杉树多60%，杨树有多少棵？
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 + (3/5)</gadget>
<output>8/5 = around 1.6</output>

<gadget id="calculator">20 * (8/5)</gadget>
<output>32</output>

<result>32</result>