A batch of chemical fertilizers was transported away in 3 days (1/5). At this speed, how many days can it be shipped?
一批化肥，3天运走了它的(1/5)．照这样的速度，几天可以运完？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">3 / (1/5)</gadget>
<output>15</output>

<result>15</result>