Master Li wants to process a batch of parts. He plans to process 60 parts per day, which can be completed in 12 days, but the task is actually completed in 9 days. How many parts are actually processed per day? (Solution by ratio)
李师傅要加工一批零件，计划每天加工60个，12天可以完成，实际9天就完成了任务，实际每天加工多少个？(用比列解)
<gadget id="calculator">60 * 12</gadget>
<output>720</output>

<gadget id="calculator">720 / 9</gadget>
<output>80</output>

<result>80</result>