In a ratio, the two internal terms are exactly reciprocals of each other. Given that one external term is 3.2, what is the other external term.
在一个比例里，两个内项正好互为倒数．已知一个外项是3.2，那么另一个外项是多少．
<gadget id="calculator">1 / 3.2</gadget>
<output>0.3125</output>

<result>0.3125</result>