Master Wang wants to process a batch of parts. The original plan is to process 36 parts per day, which will take 15 days to complete. The task was actually completed 3 days ahead of schedule, how many parts are actually processed every day?
王师傅要加工一批零件，原计划每天加工36个，需要15天完成．实际提前3天完成了任务，实际每天多加工多少个零件？
<gadget id="calculator">15 - 3</gadget>
<output>12</output>

<gadget id="calculator">15 / 12</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">36 * (5/4)</gadget>
<output>45</output>

<gadget id="calculator">45 - 36</gadget>
<output>9</output>

<result>9</result>