Calculation: (2/3)+(9/4)=how much.
计算：(2/3)+(9/4)=多少．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">9 / 4</gadget>
<output>9/4 = around 2.25</output>

<gadget id="calculator">(2/3) + (9/4)</gadget>
<output>35/12 = around 2.916667</output>

<result>35/12 = around 2.916667</result>