Mom bought 9,000 grams of sugar and ate 6,000 grams. How many kilograms are left?
妈妈买了9000克白糖，吃了6000克，还剩多少千克？
<gadget id="calculator">9_000 - 6_000</gadget>
<output>3_000</output>

<gadget id="calculator">3_000 / 1_000</gadget>
<output>3</output>

<result>3</result>