A road was originally planned to be completed in 15 days, but actually 300 meters per day was completed, but it was completed 3 days ahead of schedule. How many meters were originally planned to be repaired per day?
修一条路，原计划15天完成，实际每天修300米，结果提前3天完成，原计划每天修多少米？
<gadget id="calculator">15 - 3</gadget>
<output>12</output>

<gadget id="calculator">12 / 15</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">300 * (4/5)</gadget>
<output>240</output>

<result>240</result>