Uncle Wang used a truck to transport a batch of 2-ton cargo. (1/5) of this batch was shipped on the first day, (3/8) of this batch was shipped on the second day, and the rest of this batch of cargo was left What percentage?
王叔叔用货车运送一批2吨重的货物，第一天运了这批货物的(1/5)，第二天运了这批货物的(3/8)，还剩下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>