A road repair team repaired a section of road. The original plan was to repair 420 meters per day, and the repair was completed in 15 days. In reality, it only took 12 days. How much more meters were actually repaired per day than the original plan?
某修路队修一段路，原计划每天修420米，15天修完，实际只用了12天，实际每天比原计划多修多少米？
<gadget id="calculator">15 / 12</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">420 * (5/4)</gadget>
<output>525</output>

<gadget id="calculator">525 - 420</gadget>
<output>105</output>

<result>105</result>