What fraction of 12 kilograms is more than 8 kilograms.
12千克比8千克多几分之几多少．
<gadget id="calculator">12 - 8</gadget>
<output>4</output>

<gadget id="calculator">4 / 8</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>