The fruit shop brought in 320 kilograms of lychees and sold 270 kilograms in the morning. How many kilograms are left?
水果店运进320千克荔枝，上午卖出270千克，还剩多少千克？
<gadget id="calculator">320 - 270</gadget>
<output>50</output>

<result>50</result>