In a ratio, the two outer terms are reciprocals of each other, one inner term is (3/4), and the other inner term is how much.
在一个比例里，两个外项互为倒数，期中一个内项是(3/4)，另一个内项是多少．
<gadget id="calculator">4 / 3</gadget>
<output>4/3 = around 1.333333</output>

<result>4/3 = around 1.333333</result>