It was originally planned to build a 540-meter road in 9 days, but now it is completed 3 days ahead of schedule. How many meters are repaired every day?
原来打算9天修一条540米的路，现在提前3天完成，现在每天修多少米？
<gadget id="calculator">9 - 3</gadget>
<output>6</output>

<gadget id="calculator">540 / 6</gadget>
<output>90</output>

<result>90</result>