To pave a road, the original plan was to pave 3.2 kilometers per day and finish paving in 15 days. The actual pavement is 25% more than the original plan every day. How many days will the road be paved?
铺一条路，原计划每天铺3.2千米，15天铺完．实际每天比原计划多铺25%，实际多少天铺完这条路？
<gadget id="calculator">3.2 * 15</gadget>
<output>48</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">3.2 * (1/4)</gadget>
<output>0.8</output>

<gadget id="calculator">3.2 + 0.8</gadget>
<output>4</output>

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

<result>12</result>