An engineering team builds a road. If it builds 12 meters a day, it takes 10 days to complete. Now it repairs 15 meters a day. How many days can it be advanced?
某工程队修一条公路，如果每天修12米，10天完成，现在每天修15米，可以提前几天？
<gadget id="calculator">12 * 10</gadget>
<output>120</output>

<gadget id="calculator">120 / 15</gadget>
<output>8</output>

<gadget id="calculator">10 - 8</gadget>
<output>2</output>

<result>2</result>