There are 359 new trees planted in the park, including 196 poplars and the rest are willows. How many willows are there?
公园里新种359棵树，其中杨树196棵，剩下的是柳树，柳树有多少棵？
<gadget id="calculator">359 - 196</gadget>
<output>163</output>

<result>163</result>