To produce 240 parts, the two masters and apprentices work together to complete the task in 6 days, and the master alone can complete all tasks in 4 days (2/5), how many parts does the apprentice produce every day?
生产240个零件，师徒二人合做6天完成，师傅单独做4天能完成全部任务的(2/5)，徒弟每天生产零件多少个？
<gadget id="calculator">240 / 6</gadget>
<output>40</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(2/5) / 4</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">240 * (1/10)</gadget>
<output>24</output>

<gadget id="calculator">40 - 24</gadget>
<output>16</output>

<result>16</result>