Processing a batch of parts was originally planned to be completed in 8 days, but actually processed 20 more per day, and it was completed in only 6 days. How many parts are there in total?
加工一批零件，原计划8天完成，实际每天多加工20个，只用6天就完成了，这批零件一共有多少个？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(1/6) - (1/8)</gadget>
<output>1/24 = around 0.041667</output>

<gadget id="calculator">20 / (1/24)</gadget>
<output>480</output>

<result>480</result>