A certain speed printer can print 3600 sheets of paper per hour, how many minutes will it take to print 240 sheets of paper?
某种速印机每小时可以印3600张纸，那么印240张纸需要多少分钟．
<gadget id="calculator">3_600 / 60</gadget>
<output>60</output>

<gadget id="calculator">240 / 60</gadget>
<output>4</output>

<result>4</result>