To build a road, the original plan was to build an average of 3.2 kilometers per day, which can be completed in 45 days. The actual average daily repair is 0.4 kilometers more than planned. How many days can it actually be completed?
修一条公路，原计划平均每天修3.2千米，45天可以修完，实际平均每天比计划多修0.4千米，实际几天可以修完？
<gadget id="calculator">3.2 + 0.4</gadget>
<output>3.6</output>

<gadget id="calculator">45 / 3.6</gadget>
<output>12.5</output>

<gadget id="calculator">3.2 * 12.5</gadget>
<output>40</output>

<result>40</result>