The former term and the latter term of a ratio are reciprocals of each other. If the former term is 3, then what is the ratio.
一个比的前项和后项互为倒数，如果前项是3，那么比值是多少．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">3 / (1/3)</gadget>
<output>9</output>

<result>9</result>