(7/9) is ((())/(())) of (3/2), how much of (9/2) is (5/4).
(7/9)是(3/2)的((())/(()))，(9/2)的多少是(5/4)．
<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">9 / 2</gadget>
<output>9/2 = around 4.5</output>

<gadget id="calculator">(5/4) / (9/2)</gadget>
<output>5/18 = around 0.277778</output>

<result>5/18 = around 0.277778</result>