There are 1,250 kilograms of grain in the Xintang Grain Store. After transporting how many kilograms, the remaining amount is exactly 1 ton.
新塘粮店现有粮食1250千克，运走多少千克后，剩下的正好是1吨．
<gadget id="calculator">1 * 1_000</gadget>
<output>1_000</output>

<gadget id="calculator">1_250 - 1_000</gadget>
<output>250</output>

<result>250</result>