In the ratio a:b=c:d, if the outer terms are reciprocals and one inner term is (5/3), then what is the other inner term.
在比例a：b=c：d中，如果外项互为倒数，一个内项为(5/3)，则另一个内项为多少．
<gadget id="calculator">5 / 3</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">1 / (5/3)</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>