The numerator of a fraction is 5, the numerator is 4 less than the denominator, what is the fraction
一个分数的分子是5，分子比分母少4，这个分数是多少
<gadget id="calculator">5 + 4</gadget>
<output>9</output>

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<result>5/9 = around 0.555556</result>