In a ratio, the product of two outer terms is 12, and one of the inner terms is 23, what is the other inner term.
在一个比例中，两个外项的积是12，其中一个内项是23，则另一个内项是多少．
<gadget id="calculator">12 / 23</gadget>
<output>12/23 = around 0.521739</output>

<result>12/23 = around 0.521739</result>