To erect a cable, plan to erect 600 meters per day, complete the task in 12 days, and actually complete the task in 9 days, how many meters are actually erected on average per day?
要架一条电缆，计划每天架设600米，12天完成任务，实际9天就完成任务，实际平均每天架设多少米？
<gadget id="calculator">7_200 / 9</gadget>
<output>800</output>

<result>800</result>