The grocery store shipped 5 tons of Chinese cabbage and sold 3,000 kilograms in the morning. How many tons are left unsold?
菜店运来5吨大白菜，上午卖出3000千克，还剩多少吨没有卖？
<gadget id="calculator">3_000 / 1_000</gadget>
<output>3</output>

<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<result>2</result>