The two masters and apprentices respectively accept the production task of the same number of parts. After they each worked for 16 days, the master still needs to produce 64 pieces, and the apprentice still needs to produce 384 pieces to complete their respective tasks. It is known that the work efficiency of the apprentice is 40% lower than that of the master. How many parts does the master produce every day?
师徒二人分别接受同样多零件的生产任务．他们各工作16天后，师傅还需生产64个，徒弟还需生产384个，才能完成各自的任务．已知徒弟的工作效率比师傅少40%，师傅每天生产多少个零件？
<gadget id="calculator">384 - 64</gadget>
<output>320</output>

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(2/5) * 16</gadget>
<output>32/5 = around 6.4</output>

<gadget id="calculator">(32/5) - 16</gadget>
<output>-48/5 = around -9.6</output>

<gadget id="calculator">16 + (-48/5)</gadget>
<output>32/5 = around 6.4</output>

<gadget id="calculator">320 / (32/5)</gadget>
<output>50</output>

<result>50</result>