In a ratio, the two outer terms are reciprocals of each other, and one of the inner terms is 3.5, then what is the other inner term.
在一个比例中，两个外项互为倒数，其中一个内项是3.5，则另一个内项是多少．
<gadget id="calculator">1 / 3.5</gadget>
<output>0.285714</output>

<result>0.285714</result>