Orchard A has 240 fruit trees, while Orchard B has 20 more than twice as many trees as Orchard A. How many fruit trees does orchard A have less than orchard B?
甲果园有果树240棵，乙果园果树的棵数比甲果园的2倍还多20棵．甲果园比乙果园少多少棵果树？
<gadget id="calculator">240 * 2</gadget>
<output>480</output>

<gadget id="calculator">20 - 240</gadget>
<output>-220</output>

<gadget id="calculator">480 + (-220)</gadget>
<output>260</output>

<result>260</result>