The engineering team repaired a section of road. The original plan was to repair 3.2 kilometers per day, and it took 15 days to complete it. The actual repair was 4 kilometers per day. How many days can it be completed?
工程队修一段公路，原计划每天修3.2千米，15天完成，实际每天修4千米，可以几天可以修完？
<gadget id="calculator">3.2 * 15</gadget>
<output>48</output>

<gadget id="calculator">48 / 4</gadget>
<output>12</output>

<result>12</result>