The engineering team plans to build a road of 4.5 kilometers per day, and it will be completed in 20 days. The actual repair is 1.5 kilometers more than the original plan every day. How many days can it actually be completed?
工程队修一条路，计划每天修4.5千米，20天完成，实际每天比原计划多修1.5千米，实际几天可修完？
<gadget id="calculator">4.5 * 20</gadget>
<output>90</output>

<gadget id="calculator">4.5 + 1.5</gadget>
<output>6</output>

<gadget id="calculator">90 / 6</gadget>
<output>15</output>

<result>15</result>