The road construction team builds a road, and plans to repair 3.2 kilometers per day, which will be completed in 45 days. How many days will it actually take to repair 3.6 kilometers per day?
修路队修一条公路，计划每天修3.2千米，45天修完．实际每天修3.6千米，实际要多少天修完？
<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>