To build a road in Dongfeng Township, the original plan was to build 0.6 kilometers per day and complete it in 20 days. The actual daily repair is 0.15 kilometers more than the original plan. How many days did it actually take?
东风乡修一条公路，原计划每天修0.6千米，20天完成．实际每天比原计划多修0.15千米．实际用了多少天？
<gadget id="calculator">0.6 + 0.15</gadget>
<output>0.75</output>

<gadget id="calculator">20 / 0.75</gadget>
<output>26.666667</output>

<gadget id="calculator">0.6 * 26.666667</gadget>
<output>16</output>

<result>16</result>