There is a batch of rice in Xinglong Grain Store. After selling 80% of it, there are 480 kilograms left. How many kilograms of original rice?
兴隆粮店有一批大米，卖出它的80%后，还剩480千克．原有大米多少千克？
<gadget id="calculator">480 / 0.2</gadget>
<output>2_400</output>

<result>2_400</result>