Add 10 to the numerator of (5/8), how much should be added to the denominator to keep the size of the fraction unchanged.
将(5/8)的分子加上10，要使分数的大小不变，分母应该加上多少．
<gadget id="calculator">5 + 10</gadget>
<output>15</output>

<gadget id="calculator">15 / 5</gadget>
<output>3</output>

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

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

<result>16</result>