Master Zhang and Li Ming processed parts together. They worked for 8 hours and processed a total of 560 parts. Master Zhang said: "I process 40 parts per hour." How many parts does Li Ming process per hour?
张师傅和李明一起加工零件，工作8个小时两人一共加工了560个零件，张师傅说："我正好每小时加工40个零件．"请问李明每小时加工多少个零件？
<gadget id="calculator">560 / 8</gadget>
<output>70</output>

<gadget id="calculator">70 - 40</gadget>
<output>30</output>

<result>30</result>