To make a part, A takes 4 minutes to complete, and B takes 5 minutes to complete, how much is A’s work efficiency than B’s?
做一个零件，甲要4分钟完成，乙要5分钟完成，甲的工作效率是乙的多少
<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>5/4 = around 1.25</output>

<result>5/4 = around 1.25</result>