The numerator of a simplest fraction is enlarged by 4 times, the denominator is reduced to the original (1/3), and 8 (8/9) is obtained. What is the original simplest fraction?
把一个最简分数的分子扩大4倍，分母缩小到原来的(1/3)，得8(8/9)，原来的最简分数是多少．
<gadget id="calculator">80 / 4</gadget>
<output>20</output>

<gadget id="calculator">9 * 3</gadget>
<output>27</output>

<gadget id="calculator">20 / 27</gadget>
<output>20/27 = around 0.740741</output>

<result>20/27 = around 0.740741</result>