The construction of a road was originally planned to be completed in 15 days, but the actual repair was 300 meters per day, but it was completed 3 days ahead of schedule. How much more meters was actually repaired per day than the original plan?
修一条公路，原计划15天完成，实际每天修300米，结果提前3天完成，实际每天比原计划多修多少米？
<gadget id="calculator">15 - 3</gadget>
<output>12</output>

<gadget id="calculator">300 * 12</gadget>
<output>3_600</output>

<gadget id="calculator">3_600 / 15</gadget>
<output>240</output>

<gadget id="calculator">300 - 240</gadget>
<output>60</output>

<result>60</result>