A fraction, the numerator is 25 smaller than the denominator, the simplified fraction is (4/9), what is the original fraction.
一个分数，分子比分母小25，这个分数化简后得(4/9)，原来的分数是多少．
<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">(4/9) * 25</gadget>
<output>100/9 = around 11.111111</output>

<gadget id="calculator">1 - (4/9)</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">(100/9) / (5/9)</gadget>
<output>20</output>

<gadget id="calculator">20 + 25</gadget>
<output>45</output>

<gadget id="calculator">(100/9) / (5/9) / 45</gadget>
<output>4/9 = around 0.444444</output>

<result>4/9 = around 0.444444</result>