800 kilograms of rice were shipped in for the people's store, and 18 bags were sold, each weighing 25 kilograms. How many kilograms of rice are left?
为民商店运进800千克大米，卖出18袋，每袋重25千克，还剩大米多少千克？
<gadget id="calculator">18 * 25</gadget>
<output>450</output>

<gadget id="calculator">800 - 450</gadget>
<output>350</output>

<result>350</result>