A supermarket buys 5 tons of rice and sells 2,000 kilograms in 5 days. How many kilograms are left?
一个超市购进5吨大米，5天卖出2000千克，还剩多少千克？
<gadget id="calculator">5 * 1_000</gadget>
<output>5_000</output>

<gadget id="calculator">5_000 - 2_000</gadget>
<output>3_000</output>

<result>3_000</result>