(2/3), 1, (3/2), (9/4), how much.
(2/3)、1、(3/2)、(9/4)、多少．
<gadget id="calculator">9 / 4</gadget>
<output>9/4 = around 2.25</output>

<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(9/4) * (3/2)</gadget>
<output>27/8 = around 3.375</output>

<result>27/8 = around 3.375</result>