A factory processes a batch of parts and completes the annual task (5/7) in the first half of the year. In the second half of the year, it only needs to complete a fraction of the annual task to complete the planned workload?
某厂加工一批零件，上半年完成全年任务的(5/7)，下半年只要完成全年任务的几分之几就完成了计划工作量？
<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">1 - (5/7)</gadget>
<output>2/7 = around 0.285714</output>

<result>2/7 = around 0.285714</result>