The first workshop of a factory processes a batch of parts, and plans to process 360 parts per day, which will be completed in 15 days. The actual processing is 540 per day, so how many days can it be completed in advance? (Solve using proportional method and arithmetic method)
某工厂一车间加工一批零件，计划每天加工360个，15天完成．实际每天加工540个，这样可提前几天完成？(用比例方法和算术方法解答)
<gadget id="calculator">15 / 540</gadget>
<output>1/36 = around 0.027778</output>

<gadget id="calculator">360 * (1/36)</gadget>
<output>10</output>

<gadget id="calculator">15 - 10</gadget>
<output>5</output>

<result>5</result>