A supermarket shipped 850 kilograms of flour, sold 123 kilograms on the first day, and sold 156 kilograms on the second day, how many kilograms are left?
某超市运来面粉850千克，第一天卖出123千克，第二天卖出156千克，还剩多少千克？
<gadget id="calculator">850 - 123 - 156</gadget>
<output>571</output>

<result>571</result>