A batch of parts is divided equally between the master and the apprentice. After 6 hours, the master completed the task, but there were still 96 apprentices left to complete. It is known that the work efficiency of the apprentice is that of the master (4/5), how many parts are there in this batch?
一批零件平均分给师徒两人去做．经过6小时，师傅完成了任务，这时徒弟还差96个没有完成．已知徒弟的工作效率是师傅的(4/5)，这批零件有多少个？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(1/6) * (4/5) * 6</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">96 / (1/5)</gadget>
<output>480</output>

<gadget id="calculator">480 * 2</gadget>
<output>960</output>

<result>960</result>