A certain village wants to build a canal. In the first week, 25% of the total length was built, and in the second week, 75% of the first week was repaired. There are still 540 meters left to be completed. How long is this canal in meters?
某村要修一条水渠，第一周修了全长的25%，第二周修的是第一周的75%，还剩540米未修完，这条水渠长多少米？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">75 / 100</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(1/4) * (3/4)</gadget>
<output>3/16 = around 0.1875</output>

<gadget id="calculator">1 - (1/4) - (3/16)</gadget>
<output>9/16 = around 0.5625</output>

<gadget id="calculator">540 / (9/16)</gadget>
<output>960</output>

<result>960</result>