In the ratio, the two external terms are reciprocals of each other. If one external term is 1.6, then what is the other external term
在比例里，两个外项互为倒数，如果一个外项是1.6，那么另一个外项是多少
<gadget id="calculator">1 / 1.6</gadget>
<output>0.625</output>

<result>0.625</result>