It is known that the product of two inner terms of a ratio is 1, one of the outer terms is 1.25, and what is the other outer term.
已知一个比的两个内项的积是1，其中一个外项是1.25，另一个外项是多少．
<gadget id="calculator">1 / 1.25</gadget>
<output>0.8</output>

<result>0.8</result>