A bundle of wires is 1000 meters long, 258 meters are used for the first time, and 342 meters are used for the second time, how many meters are left? What is the column
一捆电线长1000米，第一次用去258米，第二次用去342米，还剩多少米？列式是多少
<gadget id="calculator">258 + 342</gadget>
<output>600</output>

<gadget id="calculator">1_000 - 600</gadget>
<output>400</output>

<result>400</result>