A fraction whose denominator is 72, converted into the simplest fraction is (3/4), what is the original fraction.
一个分数，它的分母是72，化成最简分数是(3/4)，这个分数原来是多少．
<gadget id="calculator">72 / 4 / 72</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">3 * (1/4)</gadget>
<output>3/4 = around 0.75</output>

<result>3/4 = around 0.75</result>