There are 480 lessons in planting poplars, more than willows (2/3), how many willows are planted?
栽杨树480课，比柳树多(2/3)，栽柳树多少棵？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 + (2/3)</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">480 / (5/3)</gadget>
<output>288</output>

<result>288</result>