A 1,200-meter-long canal has been built in Wangcun for 10 days, and there are still 480 meters left to be repaired. How many meters are repaired per day on average?
王村修一条长1200米的水渠，已经修了10天，还有480米没有修，平均每天修多少米？
<gadget id="calculator">1_200 - 480</gadget>
<output>720</output>

<gadget id="calculator">720 / 10</gadget>
<output>72</output>

<result>72</result>