((1/3)+(3/4))*12=how much.
((1/3)+(3/4))*12=多少．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(1/3) + (3/4)</gadget>
<output>13/12 = around 1.083333</output>

<gadget id="calculator">(13/12) * 12</gadget>
<output>13</output>

<result>13</result>