There are 500 peach trees in the orchard, and there are 250 fewer apricot trees than twice as many peach trees. How many apricot trees are there?
果园里有桃树500棵，杏树比桃树的2倍少250棵，杏树有多少棵？
<gadget id="calculator">500 * 2</gadget>
<output>1_000</output>

<gadget id="calculator">1_000 - 250</gadget>
<output>750</output>

<result>750</result>