If the former term of the ratio is (1/2) and the ratio is 2, then what is the latter term of the ratio.
如果比的前项是(1/2)，比值是2，那么比的后项是多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

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

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