The supermarket shipped 2 tons of rice. 800 kilograms were sold in the first two days, and sold out in the remaining 3 days. How many kilograms are sold on average per day?
超市运来2吨大米．前两天卖出800千克，剩下的3天卖完，平均每天卖出多少千克？
<gadget id="calculator">2 * 1_000</gadget>
<output>2_000</output>

<gadget id="calculator">2_000 - 800</gadget>
<output>1_200</output>

<gadget id="calculator">1_200 / 3</gadget>
<output>400</output>

<result>400</result>