Processing a batch of parts is planned to be completed in 23 days, and 300 parts are processed every day. Actually completed 3 days ahead of schedule, how many parts are actually processed every day? (Solution with proportional knowledge)
加工一批零件，计划23天完成，每天加工300个．实际提前3天完成，实际每天多加工零件多少个？(用比例知识解)
<gadget id="calculator">3 * 300</gadget>
<output>900</output>

<gadget id="calculator">23 * 300</gadget>
<output>6_900</output>

<gadget id="calculator">6_900 - 6_900</gadget>
<output>0</output>

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

<gadget id="calculator">23 - 3</gadget>
<output>20</output>

<gadget id="calculator">900 / 20</gadget>
<output>45</output>

<result>45</result>