To complete a task, (5/12) of all tasks were completed on the first day, and (1/3) of all tasks were completed on the second day. To complete this task, how many tasks must be completed?
完成一项任务，第一天完成了全部任务的(5/12)，第二天完成了全部任务的(1/3)，要完成这项任务，还要完成任务的多少
<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (5/12) - (1/3)</gadget>
<output>1/4 = around 0.25</output>

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