5 kg (1/2) is 4 kg.
5千克的(1/2)是4千克的多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) / 4</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">5 * (1/8)</gadget>
<output>5/8 = around 0.625</output>

<result>5/8 = around 0.625</result>