A fraction divides the numerator by 2 and the denominator by 7 to get (3/5). What is the original fraction?
一个分数用2去除分子，用7去除分母后得到(3/5)，原来这个分数是多少？
<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">5 * 7</gadget>
<output>35</output>

<gadget id="calculator">6 / 35</gadget>
<output>6/35 = around 0.171429</output>

<result>6/35 = around 0.171429</result>