To do the same job, team A completes it in 4 hours and team B in 5 hours, how much is the work efficiency of team A higher than that of team B?
做同样一件工作，甲队4小时完成，乙队5小时完成，甲队的工作效率比乙队提高了多少
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/4) - (1/5)</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">(1/20) / (1/5)</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>