The green team planted a total of 1,240 pine and willow trees, of which 750 were pine trees. What about willows?
绿化队种松树和柳树共1240棵，其中种松树750棵，柳树呢？
<gadget id="calculator">1_240 - 750</gadget>
<output>490</output>

<result>490</result>