An electrical appliance store ordered 1,000 washing machines, 348 were shipped the first time, and 346 were shipped the second time. How many more have not arrived?
电器商店订购了1000台洗衣机，第一次运来348台，第二次运来346台．还有多少台没有运来？
<gadget id="calculator">1_000 - 348 - 346</gadget>
<output>306</output>

<result>306</result>