The first workshop of the bicycle factory originally planned to produce 960 bicycles in 8 days with 30 people. After 3 days of production, due to the urgent task, some bicycle production tasks were transferred to the second workshop. As a result, the first workshop completed the task with 40 people and 2 days. How many bicycles should be transferred? The task for the second workshop?
自行车厂一车间原计划30人8天生产自行车960辆，生产3天后，因任务紧迫，调部分生产自行车任务给二车间，结果一车间又用40人2天完成任务，求调多少辆生产自行车任务给二车间？
<gadget id="calculator">960 / 30 / 8</gadget>
<output>4</output>

<gadget id="calculator">4 * 40 * 2</gadget>
<output>320</output>

<gadget id="calculator">960 / 8</gadget>
<output>120</output>

<gadget id="calculator">120 * 3</gadget>
<output>360</output>

<gadget id="calculator">320 + 360</gadget>
<output>680</output>

<gadget id="calculator">960 - 680</gadget>
<output>280</output>

<result>280</result>