The former term of (8/15) is increased by 16, if the ratio is to remain unchanged, how much should the latter term be multiplied by.
(8/15)的前项增加16，如果要使比值不变，后项应该乘上多少．
<gadget id="calculator">8 + 16</gadget>
<output>24</output>

<gadget id="calculator">24 / 8</gadget>
<output>3</output>

<result>3</result>