There are 130 poplars in the People's Park, 10 more than three times the number of willows. How many willows are there in the park?
人民公园里的杨树共130棵，比柳树棵数的3倍多10棵，公园里的柳树有多少棵？
<gadget id="calculator">130 - 10</gadget>
<output>120</output>

<gadget id="calculator">120 / 3</gadget>
<output>40</output>

<result>40</result>