There are 48 poplar trees planted in the campus, 20 more than the willow trees planted (2/3). How many willow trees are there? How many columns
校园里栽的杨树有48棵，比栽的柳树的(2/3)还多20棵，柳树有几棵？列式多少
<gadget id="calculator">48 - 20</gadget>
<output>28</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">28 / (2/3)</gadget>
<output>42</output>

<result>42</result>