The former term of a ratio is 6.5, the ratio is (1/2), and what is the latter term.
一个比的前项是6.5，比值是(1/2)，后项是多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">6.5 / (1/2)</gadget>
<output>13</output>

<result>13</result>