(3/8) hectare = how many square meters.
(3/8)公顷=多少平方米．
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">(3/8) * 10_000</gadget>
<output>3_750</output>

<result>3_750</result>