Add 45 to the numerator of the fraction (9/11), to make the fraction equal to (9/11), how much should be added to the denominator.
分数(9/11)的分子加上45，要使分数值仍等于(9/11)，那么分母应加上多少．
<gadget id="calculator">11 * 6</gadget>
<output>66</output>

<gadget id="calculator">66 - 11</gadget>
<output>55</output>

<result>55</result>