A barrel of oil weighs (3/2) kilograms, what is the weight of (1/2) barrel of oil in kilograms.
一桶油重(3/2)千克，(1/2)桶油重多少千克．
<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(3/2) * (1/2)</gadget>
<output>3/4 = around 0.75</output>

<result>3/4 = around 0.75</result>