There is a pile of goods, (1/5) of the goods are shipped on the first day, and (3/8) of the goods are shipped on the second day, what fraction of the goods are the remaining goods?
有一堆货物，第一天运走了这批货物的(1/5)，第二天运走了这批货物的(3/8)，剩下的货物占这批货物的几分之几？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 - (1/5) - (3/8)</gadget>
<output>17/40 = around 0.425</output>

<result>17/40 = around 0.425</result>