(1/2), (1/4), (1/8) how many.
(1/2)、(1/4)、(1/8)多少．
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

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

<gadget id="calculator">(1/8) * (1/2)</gadget>
<output>1/16 = around 0.0625</output>

<result>1/16 = around 0.0625</result>