Master Wang processes a batch of parts, plans to process 10 per hour, and completes them all in 12 hours, but actually processes 20% more per hour. How long does it actually take to complete all the work?
王师傅加工一批零件，计划每小时加工10个，12小时全部完成，实际每小时多加工20%，实际用了多长时间就完成全部工作？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">10 * (6/5)</gadget>
<output>12</output>

<gadget id="calculator">12 / 12</gadget>
<output>1</output>

<gadget id="calculator">10 * 1</gadget>
<output>10</output>

<result>10</result>