In proportion, the product of the two outer terms is 6, one of the inner terms is (1/2), and what is the other inner term.
在比例中，两外项之积是6，其中一个内项为(1/2)，另一个内项是多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">6 / (1/2)</gadget>
<output>12</output>

<result>12</result>