Subtract 10 from the denominator of (24/25), how much should be subtracted from the numerator to keep the size of the fraction unchanged.
将(24/25)的分母减去10，要使分数的大小不变，分子应减去多少．
<gadget id="calculator">25 / 15</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">24 / (5/3)</gadget>
<output>72/5 = around 14.4</output>

<gadget id="calculator">24 - (72/5)</gadget>
<output>48/5 = around 9.6</output>

<result>48/5 = around 9.6</result>