The grain store originally had 1 ton of flour, sold 350 kilograms on Monday, and sold 280 kilograms on Tuesday, how many kilograms of flour are left?
粮店原来有1吨面粉，星期一卖了350千克，星期二卖了280千克，还剩下多少千克面粉？
<gadget id="calculator">1 * 1_000</gadget>
<output>1_000</output>

<gadget id="calculator">1_000 - 350 - 280</gadget>
<output>370</output>

<result>370</result>