Fengshou Village has built a canal, 180 meters has been built, which is less than the unbuilt one (1/4). How many meters of this canal have not been repaired?
丰收村修一条水渠，已修了180米，比未修的少(1/4)．这条水渠还有多少米未修？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">180 / (3/4)</gadget>
<output>240</output>

<result>240</result>