A class of fifth grade went to plant trees, and planted 40 poplars, five times the number of willows. How many willows were planted in a fifth grade class?
五年级一班同学去植树，植杨树40棵，是植柳树棵数的5倍，五年级一班植柳树多少棵？
<gadget id="calculator">40 / 5</gadget>
<output>8</output>

<result>8</result>