In a ratio, it is known that the product of two outer terms is (2/3), one of which is the smallest prime number, and what is the other inner term.
在一个比例中，已知两个外项积为(2/3)，其中一个内项是最小的质数，另一个内项是多少．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(2/3) / 2</gadget>
<output>1/3 = around 0.333333</output>

<result>1/3 = around 0.333333</result>