Half of a number is (1/3), what is this number?
一个数的一半是(1/3)，这个数是多少？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/3) / (1/2)</gadget>
<output>2/3 = around 0.666667</output>

<result>2/3 = around 0.666667</result>