(2/3)*4*(1/2)=how much.
(2/3)*4*(1/2)=多少．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

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

<gadget id="calculator">(2/3) * 4 * (1/2)</gadget>
<output>4/3 = around 1.333333</output>

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