Fill in the appropriate number in the horizontal line. (1/2), (2/6), (4/18), (8/54), how many.
在横线里填上适当的数．(1/2)，(2/6)，(4/18)，(8/54)，多少．
<gadget id="calculator">8 * 2</gadget>
<output>16</output>

<gadget id="calculator">54 * 3</gadget>
<output>162</output>

<gadget id="calculator">16 / 162</gadget>
<output>8/81 = around 0.098765</output>

<result>8/81 = around 0.098765</result>