canal has been built for 240 meters, which is more (1/2) than the unbuilt one. How many meters is the total length of this canal?
一条水渠已经修了240米，已经修的比未修的多(1/2)，这条水渠全长多少米？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 + (1/2)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">240 / (3/2)</gadget>
<output>160</output>

<gadget id="calculator">240 + 160</gadget>
<output>400</output>

<result>400</result>