A bottle of oil weighs (3/4) kilograms, and (3/4) is used, how many kilograms are used.
一瓶油重(3/4)千克，用去(3/4)，用了多少千克．
<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>