Calculation: (8/9)*(9/4)=how much.
计算：(8/9)*(9/4)=多少．
<gadget id="calculator">8 / 9</gadget>
<output>8/9 = around 0.888889</output>

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

<gadget id="calculator">(8/9) * (9/4)</gadget>
<output>2</output>

<result>2</result>