The master and apprentice process a batch of parts, the apprentice has already processed 20% of the total, and the master has processed (1/3) of the total. At this time, the master processed 80 more parts than the apprentice. How many parts are there in total?
师徒加工一批零件，徒弟已经加工了总数的20%，师傅加工了总数的(1/3)．这时师傅比徒弟多加工80个，这批零件一共有多少个？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/3) - (1/5)</gadget>
<output>2/15 = around 0.133333</output>

<gadget id="calculator">80 / (2/15)</gadget>
<output>600</output>

<result>600</result>