A grain shop shipped 5,000 kilograms of rice, 1,400 kilograms have already been bought, and the rest is planned to be sold out within 4 days. How many kilograms do you buy on average per day?
一个粮店运来5000千克大米，已经买了1400千克，剩下的计划4天卖完．平均每天要买多少千克？
<gadget id="calculator">5_000 - 1_400</gadget>
<output>3_600</output>

<gadget id="calculator">3_600 / 4</gadget>
<output>900</output>

<result>900</result>