Master Wang plans to process 80 parts per day, but actually processes 20 more per day, so that the task is completed 3 days ahead of schedule. How many parts are there in total?
王师傅计划每天加工80个零件，实际每天多加工20个，这样提前3天完成任务，这批零件共有多少个？
<gadget id="calculator">80 + 20</gadget>
<output>100</output>

<gadget id="calculator">3 / 20</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">100 * (3/20)</gadget>
<output>15</output>

<gadget id="calculator">80 * 15</gadget>
<output>1_200</output>

<result>1_200</result>