In 8:5, add 24 to the former term, in order to keep the ratio constant, how much should be added to the latter term
在8：5中，把前项加24，为了使比值不变，后项应加多少
<gadget id="calculator">8 / 5</gadget>
<output>8/5 = around 1.6</output>

<gadget id="calculator">(8/5) * 5</gadget>
<output>8</output>

<gadget id="calculator">24 - 8</gadget>
<output>16</output>

<gadget id="calculator">8 + 16</gadget>
<output>24</output>

<gadget id="calculator">24 / (8/5)</gadget>
<output>15</output>

<result>15</result>