The supermarket originally had 3,600 kilograms of rice. After selling 3,000 kilograms, another 2,000 kilograms were shipped in. How many kilograms of rice are there now?
超市原有3600千克大米，卖掉3000千克后，又运来2000千克，现在还有多少千克大米？
<gadget id="calculator">3_600 - 3_000</gadget>
<output>600</output>

<gadget id="calculator">600 + 2_000</gadget>
<output>2_600</output>

<result>2_600</result>