Uncle Li works 8 hours a day and produces 300 parts. According to this calculation, how many parts will he produce in total if he works 20 days a month?
李叔叔每天工作8小时，生产300个零件．照这样计算，他一个月上班20天，一共生产多少个零件？
<gadget id="calculator">300 / 8</gadget>
<output>75/2 = around 37.5</output>

<gadget id="calculator">(75/2) * 20</gadget>
<output>750</output>

<result>750</result>