Solution ratio: (9+Χ): (9-Χ)=5:3.
解比例：(9+Χ)：(9-Χ)=5：3．
<gadget id="calculator">5 / 3</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">(5/3) * 9</gadget>
<output>15</output>

<gadget id="calculator">15 - 9</gadget>
<output>6</output>

<gadget id="calculator">1 + (5/3)</gadget>
<output>8/3 = around 2.666667</output>

<gadget id="calculator">6 / (8/3)</gadget>
<output>9/4 = around 2.25</output>

<result>9/4 = around 2.25</result>