In the proportion, if the two inner terms of the proportion are reciprocals of each other, and one outer term is 2.4, then what is the other outer term.
在比例中，如果组成比例的两个内项互为倒数，一个外项是2.4，那么另一个外项是多少．
<gadget id="calculator">1 / 2.4</gadget>
<output>0.416667</output>

<result>0.416667</result>