If a and b are reciprocals of each other, and (8/(a))=((b)/(x)), then 2x=how much.
如果a与b互为倒数，且(8/(a))=((b)/(x))，那么2x=多少．
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">8 / 8</gadget>
<output>1</output>

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

<gadget id="calculator">2 * (1/8)</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>