A fraction can be divided into (3/7) by adding 3 to its denominator and (2/3) by subtracting 2 from its denominator. What is this fraction?
一个分数，它的分母加上3可约分为(3/7)，它的分母减去2可约分为(2/3)，这个分数是多少？
<gadget id="calculator">3 * 11</gadget>
<output>33</output>

<gadget id="calculator">33 + 9</gadget>
<output>42</output>

<gadget id="calculator">42 / 7</gadget>
<output>6</output>

<gadget id="calculator">6 / 11</gadget>
<output>6/11 = around 0.545455</output>

<result>6/11 = around 0.545455</result>