A road needs to be repaired urgently in a mountainous area. It was originally planned to repair 300 meters per hour, and it took 20 hours to complete. Now it requires 12 hours to complete. So, how much more meters should be repaired per hour than the original plan?
某山区要抢修一条公路，原计划每小时修300米，20小时完成，现在要求12小时完成，那么，每小时比原计划多修多少米？
<gadget id="calculator">20 / 12</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">300 * (5/3)</gadget>
<output>500</output>

<gadget id="calculator">500 - 300</gadget>
<output>200</output>

<result>200</result>