Dad bought back 3000 grams of rice, and after eating 1000 grams, he bought back 4000 grams. How many kilograms of rice are left?
爸爸买回3000克大米，吃了1000克后，又买回4000克，还剩下大米多少千克？
<gadget id="calculator">3_000 - 1_000</gadget>
<output>2_000</output>

<gadget id="calculator">2_000 + 4_000</gadget>
<output>6_000</output>

<gadget id="calculator">6_000 / 1_000</gadget>
<output>6</output>

<result>6</result>