It takes 30 days for team A to repair a section of railway alone, and the work efficiency of team B is that of A (3/5). How many days can team B finish?
修一段铁路，甲队单独修用30天完成，乙队的工作效率是甲的(3/5)．乙队几天可以完成？
<gadget id="calculator">1 / 30</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(1/30) * (3/5)</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">1 / (1/50)</gadget>
<output>50</output>

<result>50</result>