The store shipped 3 tons of rice, sold 480 kg on the first day and 800 kg on the second day, how many kg are left?
商店运来3吨大米，第一天卖出480千克，第二天卖出800千克，还剩多少千克？
<gadget id="calculator">3 * 1_000</gadget>
<output>3_000</output>

<gadget id="calculator">480 + 800</gadget>
<output>1_280</output>

<gadget id="calculator">3_000 - 1_280</gadget>
<output>1_720</output>

<result>1_720</result>