An engineering team built a road for the Sichuan earthquake-stricken area. It was originally planned to repair 200 meters per day, and it took 18 days to complete it. It turned out that it only took 12 days to complete it. How many meters are repaired per day on average? (Solve with ratio)
某工程队为四川地震灾区援建一条公路，原计划每天修200米，18天完成，结果只用了12天完成，平均每天修多少米？(用比例解)
<gadget id="calculator">200 * 18</gadget>
<output>3_600</output>

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

<result>300</result>