After Master Wu improved his technology, the time to process a part has been reduced from 10 minutes to 6 minutes. So how many hours does it take to process the part he is now processing in 9 hours? (Solve with ratio)
吴师傅改进技术后，加工一个零件的时间从原来的10分钟降低到6分钟，那么他现在9小时加工的零件，原来加工需要多少小时完成？(用比例解)
<gadget id="calculator">10 / 6</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">(5/3) * 9</gadget>
<output>15</output>

<result>15</result>