There is a batch of goods at the railway station, 20% are shipped out on the first day, and the remaining 30% are shipped out on the second day. What percent of the shipment was shipped the next day?
火车站有一批货物，第一天运出20%，第二天运出剩下的30%．第二天运出了这批货物的百分之几？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(4/5) * (3/10)</gadget>
<output>6/25 = around 0.24</output>

<result>6/25 = around 0.24</result>