Build a (3/4) kilometer canal, (3/4) has been repaired, how many kilometers have been repaired
修一条(3/4)千米的水渠，已修了(3/4)，修了多少千米
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

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

<result>9/16 = around 0.5625</result>