The grain store shipped 8,400 kilograms of rice, and 1,600 kilograms remained after selling for 8 days. How many kilograms are sold on average per day?
粮店运来大米8400千克，卖了8天还剩1600千克，平均每天卖出多少千克？
<gadget id="calculator">8_400 - 1_600</gadget>
<output>6_800</output>

<gadget id="calculator">6_800 / 8</gadget>
<output>850</output>

<result>850</result>