A task was originally planned to be completed in 8 days, but due to the improvement of operating technology, the task was completed 3 days ahead of schedule, and how much work efficiency has been improved
一项工作，原计划8天完成任务，由于改进操作技术，结果提前3天完成任务，工作效率提高了多少
<gadget id="calculator">8 - 3</gadget>
<output>5</output>

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

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(1/5) - (1/8)</gadget>
<output>3/40 = around 0.075</output>

<gadget id="calculator">(3/40) / (1/8)</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>