The factory has to process a batch of parts. It is planned to process 75 parts per day, and it will be completed in 12 days. The task is actually completed 3 days ahead of schedule. How many more parts are actually processed per day than the original plan? (Solve with ratio)
工厂要加工一批零件，计划每天加工75个，12天完成，实际提前3天完成任务，实际每天比原计划多加工多少个？(用比例解)
<gadget id="calculator">3 * 75</gadget>
<output>225</output>

<gadget id="calculator">75 * 12</gadget>
<output>900</output>

<gadget id="calculator">12 * 75</gadget>
<output>900</output>

<gadget id="calculator">900 - 900</gadget>
<output>0</output>

<gadget id="calculator">225 + 0</gadget>
<output>225</output>

<gadget id="calculator">12 - 3</gadget>
<output>9</output>

<gadget id="calculator">225 / 9</gadget>
<output>25</output>

<result>25</result>