There is a batch of rice in the grain store. After selling 1/4 of it, another 480 kilograms are shipped in. The rice at this time is equivalent to 80% of the original amount. How many kilograms of rice were there originally?
粮店有一批大米，卖出它的(1/4)后，又运来480千克，这时的大米相当于原来的80%，原来有大米多少千克？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(4/5) - (3/4)</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">480 / (1/20)</gadget>
<output>9_600</output>

<result>9_600</result>