In a ratio, if the product of two outer terms is (1/2) and one of the inner terms is (2/3), what is the other inner term.
在一个比例中，如果两个外项的积是(1/2)，其中一个内项是(2/3)，则另一个内项是多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(1/2) / (2/3)</gadget>
<output>3/4 = around 0.75</output>

<result>3/4 = around 0.75</result>