It is known that the product of two inner terms in a ratio is the smallest prime number, one outer term is 0.75, and what is the other outer term.
已知一个比例中两个内项的积是最小的质数，一个外项是0.75，另一个外项是多少．
<gadget id="calculator">2 / 0.75</gadget>
<output>2.666667</output>

<result>2.666667</result>