The road construction team repaired a road, 32 meters a day, and completed the repair in 15 days. If you repair 8 meters more every day, how many days can you finish it in advance?
修路队修一条公路，每天修32米，15天修完．如果每天多修8米，可以提前几天修完？
<gadget id="calculator">32 + 8</gadget>
<output>40</output>

<gadget id="calculator">15 / 40</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">32 * (3/8)</gadget>
<output>12</output>

<gadget id="calculator">15 - 12</gadget>
<output>3</output>

<result>3</result>