The difference between the denominator and the numerator of a fraction is 77, and after the division is reduced to (9/16), what is the original fraction?
一个分数的分母与分子的差为77，约分后为(9/16)，则原来的这个分数为多少．
<gadget id="calculator">16 - 9</gadget>
<output>7</output>

<gadget id="calculator">77 / 7</gadget>
<output>11</output>

<gadget id="calculator">16 * 11</gadget>
<output>176</output>

<gadget id="calculator">77 / 7 / 176</gadget>
<output>1/16 = around 0.0625</output>

<gadget id="calculator">9 * (1/16)</gadget>
<output>9/16 = around 0.5625</output>

<result>9/16 = around 0.5625</result>