A road was originally planned to be completed in 12 days, but it was actually repaired 300 meters per day, but it was completed 4 days ahead of schedule. How many meters was less than the original plan?
修一条路，原计划12天完成，实际每天修300米，结果提前4天完成，原计划每天比实际少修多少米？
<gadget id="calculator">12 - 4</gadget>
<output>8</output>

<gadget id="calculator">300 * 8</gadget>
<output>2_400</output>

<gadget id="calculator">2_400 / 12</gadget>
<output>200</output>

<gadget id="calculator">300 - 200</gadget>
<output>100</output>

<result>100</result>